81556020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{383}}^1$

素因数の和:431

約数の個数: 216

約数和(自身を含む): 306948096

約数和(自身を除く): 225392076

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 52, 60, 63, 65, 70, 78, 84, 90, 91, 105, 117, 126, 130, 140, 156, 169, 180, 182, 195, 210, 234, 252, 260, 273, 315, 338, 364, 383, 390, 420, 455, 468, 507, 546, 585, 630, 676, 766, 780, 819, 845, 910, 1014, 1092, 1149, 1170, 1183, 1260, 1365, 1521, 1532, 1638, 1690, 1820, 1915, 2028, 2298, 2340, 2366, 2535, 2681, 2730, 3042, 3276, 3380, 3447, 3549, 3830, 4095, 4596, 4732, 4979, 5070, 5362, 5460, 5745, 5915, 6084, 6894, 7098, 7605, 7660, 8043, 8190, 9958, 10140, 10647, 10724, 11490, 11830, 13405, 13788, 14196, 14937, 15210, 16086, 16380, 17235, 17745, 19916, 21294, 22980, 23660, 24129, 24895, 26810, 29874, 30420, 32172, 34470, 34853, 35490, 40215, 42588, 44811, 48258, 49790, 53235, 53620, 59748, 64727, 68940, 69706, 70980, 74685, 80430, 89622, 96516, 99580, 104559, 106470, 120645, 129454, 139412, 149370, 160860, 174265, 179244, 194181, 209118, 212940, 224055, 241290, 258908, 298740, 313677, 323635, 348530, 388362, 418236, 448110, 453089, 482580, 522795, 582543, 627354, 647270, 697060, 776724, 896220, 906178, 970905, 1045590, 1165086, 1254708, 1294540, 1359267, 1568385, 1812356, 1941810, 2091180, 2265445, 2330172, 2718534, 2912715, 3136770, 3883620, 4077801, 4530890, 5437068, 5825430, 6273540, 6796335, 8155602, 9061780, 11650860, 13592670, 16311204, 20389005, 27185340, 40778010, 81556020]

約数ペア:

[(1, 81556020), (2, 40778010), (3, 27185340), (4, 20389005), (5, 16311204), (6, 13592670), (7, 11650860), (9, 9061780), (10, 8155602), (12, 6796335), (13, 6273540), (14, 5825430), (15, 5437068), (18, 4530890), (20, 4077801), (21, 3883620), (26, 3136770), (28, 2912715), (30, 2718534), (35, 2330172), (36, 2265445), (39, 2091180), (42, 1941810), (45, 1812356), (52, 1568385), (60, 1359267), (63, 1294540), (65, 1254708), (70, 1165086), (78, 1045590), (84, 970905), (90, 906178), (91, 896220), (105, 776724), (117, 697060), (126, 647270), (130, 627354), (140, 582543), (156, 522795), (169, 482580), (180, 453089), (182, 448110), (195, 418236), (210, 388362), (234, 348530), (252, 323635), (260, 313677), (273, 298740), (315, 258908), (338, 241290), (364, 224055), (383, 212940), (390, 209118), (420, 194181), (455, 179244), (468, 174265), (507, 160860), (546, 149370), (585, 139412), (630, 129454), (676, 120645), (766, 106470), (780, 104559), (819, 99580), (845, 96516), (910, 89622), (1014, 80430), (1092, 74685), (1149, 70980), (1170, 69706), (1183, 68940), (1260, 64727), (1365, 59748), (1521, 53620), (1532, 53235), (1638, 49790), (1690, 48258), (1820, 44811), (1915, 42588), (2028, 40215), (2298, 35490), (2340, 34853), (2366, 34470), (2535, 32172), (2681, 30420), (2730, 29874), (3042, 26810), (3276, 24895), (3380, 24129), (3447, 23660), (3549, 22980), (3830, 21294), (4095, 19916), (4596, 17745), (4732, 17235), (4979, 16380), (5070, 16086), (5362, 15210), (5460, 14937), (5745, 14196), (5915, 13788), (6084, 13405), (6894, 11830), (7098, 11490), (7605, 10724), (7660, 10647), (8043, 10140), (8190, 9958)]