81010020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{401}}^1$

素因数の和:470

約数の個数: 192

約数和(自身を含む): 287433216

約数和(自身を除く): 206423196

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 37, 39, 42, 52, 60, 65, 70, 74, 78, 84, 91, 105, 111, 130, 140, 148, 156, 182, 185, 195, 210, 222, 259, 260, 273, 364, 370, 390, 401, 420, 444, 455, 481, 518, 546, 555, 740, 777, 780, 802, 910, 962, 1036, 1092, 1110, 1203, 1295, 1365, 1443, 1554, 1604, 1820, 1924, 2005, 2220, 2405, 2406, 2590, 2730, 2807, 2886, 3108, 3367, 3885, 4010, 4810, 4812, 5180, 5213, 5460, 5614, 5772, 6015, 6734, 7215, 7770, 8020, 8421, 9620, 10101, 10426, 11228, 12030, 13468, 14035, 14430, 14837, 15540, 15639, 16835, 16842, 20202, 20852, 24060, 26065, 28070, 28860, 29674, 31278, 33670, 33684, 36491, 40404, 42105, 44511, 50505, 52130, 56140, 59348, 62556, 67340, 72982, 74185, 78195, 84210, 89022, 101010, 103859, 104260, 109473, 145964, 148370, 156390, 168420, 178044, 182455, 192881, 202020, 207718, 218946, 222555, 296740, 311577, 312780, 364910, 385762, 415436, 437892, 445110, 519295, 547365, 578643, 623154, 729820, 771524, 890220, 964405, 1038590, 1094730, 1157286, 1246308, 1350167, 1557885, 1928810, 2077180, 2189460, 2314572, 2700334, 2893215, 3115770, 3857620, 4050501, 5400668, 5786430, 6231540, 6750835, 8101002, 11572860, 13501670, 16202004, 20252505, 27003340, 40505010, 81010020]

約数ペア:

[(1, 81010020), (2, 40505010), (3, 27003340), (4, 20252505), (5, 16202004), (6, 13501670), (7, 11572860), (10, 8101002), (12, 6750835), (13, 6231540), (14, 5786430), (15, 5400668), (20, 4050501), (21, 3857620), (26, 3115770), (28, 2893215), (30, 2700334), (35, 2314572), (37, 2189460), (39, 2077180), (42, 1928810), (52, 1557885), (60, 1350167), (65, 1246308), (70, 1157286), (74, 1094730), (78, 1038590), (84, 964405), (91, 890220), (105, 771524), (111, 729820), (130, 623154), (140, 578643), (148, 547365), (156, 519295), (182, 445110), (185, 437892), (195, 415436), (210, 385762), (222, 364910), (259, 312780), (260, 311577), (273, 296740), (364, 222555), (370, 218946), (390, 207718), (401, 202020), (420, 192881), (444, 182455), (455, 178044), (481, 168420), (518, 156390), (546, 148370), (555, 145964), (740, 109473), (777, 104260), (780, 103859), (802, 101010), (910, 89022), (962, 84210), (1036, 78195), (1092, 74185), (1110, 72982), (1203, 67340), (1295, 62556), (1365, 59348), (1443, 56140), (1554, 52130), (1604, 50505), (1820, 44511), (1924, 42105), (2005, 40404), (2220, 36491), (2405, 33684), (2406, 33670), (2590, 31278), (2730, 29674), (2807, 28860), (2886, 28070), (3108, 26065), (3367, 24060), (3885, 20852), (4010, 20202), (4810, 16842), (4812, 16835), (5180, 15639), (5213, 15540), (5460, 14837), (5614, 14430), (5772, 14035), (6015, 13468), (6734, 12030), (7215, 11228), (7770, 10426), (8020, 10101), (8421, 9620)]