261768780

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{761}}^1$

素因数の和:806

約数の個数: 288

約数和(自身を含む): 1021567680

約数和(自身を除く): 759798900

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 27, 28, 30, 35, 36, 39, 42, 45, 49, 52, 54, 60, 63, 65, 70, 78, 84, 90, 91, 98, 105, 108, 117, 126, 130, 135, 140, 147, 156, 180, 182, 189, 195, 196, 210, 234, 245, 252, 260, 270, 273, 294, 315, 351, 364, 378, 390, 420, 441, 455, 468, 490, 540, 546, 585, 588, 630, 637, 702, 735, 756, 761, 780, 819, 882, 910, 945, 980, 1092, 1170, 1260, 1274, 1323, 1365, 1404, 1470, 1522, 1638, 1755, 1764, 1820, 1890, 1911, 2205, 2283, 2340, 2457, 2548, 2646, 2730, 2940, 3044, 3185, 3276, 3510, 3780, 3805, 3822, 4095, 4410, 4566, 4914, 5292, 5327, 5460, 5733, 6370, 6615, 6849, 7020, 7610, 7644, 8190, 8820, 9132, 9555, 9828, 9893, 10654, 11415, 11466, 12285, 12740, 13230, 13698, 15220, 15981, 16380, 17199, 19110, 19786, 20547, 21308, 22830, 22932, 24570, 26460, 26635, 27396, 28665, 29679, 31962, 34245, 34398, 37289, 38220, 39572, 41094, 45660, 47943, 49140, 49465, 53270, 57330, 59358, 63924, 68490, 68796, 69251, 74578, 79905, 82188, 85995, 89037, 95886, 98930, 102735, 106540, 111867, 114660, 118716, 136980, 138502, 143829, 148395, 149156, 159810, 171990, 178074, 186445, 191772, 197860, 205470, 207753, 223734, 239715, 267111, 277004, 287658, 296790, 319620, 335601, 343980, 346255, 356148, 372890, 410940, 415506, 445185, 447468, 479430, 484757, 534222, 559335, 575316, 593580, 623259, 671202, 692510, 719145, 745780, 831012, 890370, 958860, 969514, 1006803, 1038765, 1068444, 1118670, 1246518, 1335555, 1342404, 1385020, 1438290, 1454271, 1678005, 1780740, 1869777, 1939028, 2013606, 2077530, 2237340, 2423785, 2493036, 2671110, 2876580, 2908542, 3116295, 3356010, 3739554, 4027212, 4155060, 4362813, 4847570, 5034015, 5342220, 5817084, 6232590, 6712020, 7271355, 7479108, 8725626, 9348885, 9695140, 10068030, 12465180, 13088439, 14542710, 17451252, 18697770, 20136060, 21814065, 26176878, 29085420, 37395540, 43628130, 52353756, 65442195, 87256260, 130884390, 261768780]

約数ペア:

[(1, 261768780), (2, 130884390), (3, 87256260), (4, 65442195), (5, 52353756), (6, 43628130), (7, 37395540), (9, 29085420), (10, 26176878), (12, 21814065), (13, 20136060), (14, 18697770), (15, 17451252), (18, 14542710), (20, 13088439), (21, 12465180), (26, 10068030), (27, 9695140), (28, 9348885), (30, 8725626), (35, 7479108), (36, 7271355), (39, 6712020), (42, 6232590), (45, 5817084), (49, 5342220), (52, 5034015), (54, 4847570), (60, 4362813), (63, 4155060), (65, 4027212), (70, 3739554), (78, 3356010), (84, 3116295), (90, 2908542), (91, 2876580), (98, 2671110), (105, 2493036), (108, 2423785), (117, 2237340), (126, 2077530), (130, 2013606), (135, 1939028), (140, 1869777), (147, 1780740), (156, 1678005), (180, 1454271), (182, 1438290), (189, 1385020), (195, 1342404), (196, 1335555), (210, 1246518), (234, 1118670), (245, 1068444), (252, 1038765), (260, 1006803), (270, 969514), (273, 958860), (294, 890370), (315, 831012), (351, 745780), (364, 719145), (378, 692510), (390, 671202), (420, 623259), (441, 593580), (455, 575316), (468, 559335), (490, 534222), (540, 484757), (546, 479430), (585, 447468), (588, 445185), (630, 415506), (637, 410940), (702, 372890), (735, 356148), (756, 346255), (761, 343980), (780, 335601), (819, 319620), (882, 296790), (910, 287658), (945, 277004), (980, 267111), (1092, 239715), (1170, 223734), (1260, 207753), (1274, 205470), (1323, 197860), (1365, 191772), (1404, 186445), (1470, 178074), (1522, 171990), (1638, 159810), (1755, 149156), (1764, 148395), (1820, 143829), (1890, 138502), (1911, 136980), (2205, 118716), (2283, 114660), (2340, 111867), (2457, 106540), (2548, 102735), (2646, 98930), (2730, 95886), (2940, 89037), (3044, 85995), (3185, 82188), (3276, 79905), (3510, 74578), (3780, 69251), (3805, 68796), (3822, 68490), (4095, 63924), (4410, 59358), (4566, 57330), (4914, 53270), (5292, 49465), (5327, 49140), (5460, 47943), (5733, 45660), (6370, 41094), (6615, 39572), (6849, 38220), (7020, 37289), (7610, 34398), (7644, 34245), (8190, 31962), (8820, 29679), (9132, 28665), (9555, 27396), (9828, 26635), (9893, 26460), (10654, 24570), (11415, 22932), (11466, 22830), (12285, 21308), (12740, 20547), (13230, 19786), (13698, 19110), (15220, 17199), (15981, 16380)]