81220920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1663}}^1$

素因数の和:1725

約数の個数: 128

約数和(自身を含む): 273162240

約数和(自身を除く): 191941320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 37, 40, 44, 55, 60, 66, 74, 88, 110, 111, 120, 132, 148, 165, 185, 220, 222, 264, 296, 330, 370, 407, 440, 444, 555, 660, 740, 814, 888, 1110, 1221, 1320, 1480, 1628, 1663, 2035, 2220, 2442, 3256, 3326, 4070, 4440, 4884, 4989, 6105, 6652, 8140, 8315, 9768, 9978, 12210, 13304, 16280, 16630, 18293, 19956, 24420, 24945, 33260, 36586, 39912, 48840, 49890, 54879, 61531, 66520, 73172, 91465, 99780, 109758, 123062, 146344, 182930, 184593, 199560, 219516, 246124, 274395, 307655, 365860, 369186, 439032, 492248, 548790, 615310, 676841, 731720, 738372, 922965, 1097580, 1230620, 1353682, 1476744, 1845930, 2030523, 2195160, 2461240, 2707364, 3384205, 3691860, 4061046, 5414728, 6768410, 7383720, 8122092, 10152615, 13536820, 16244184, 20305230, 27073640, 40610460, 81220920]

約数ペア:

[(1, 81220920), (2, 40610460), (3, 27073640), (4, 20305230), (5, 16244184), (6, 13536820), (8, 10152615), (10, 8122092), (11, 7383720), (12, 6768410), (15, 5414728), (20, 4061046), (22, 3691860), (24, 3384205), (30, 2707364), (33, 2461240), (37, 2195160), (40, 2030523), (44, 1845930), (55, 1476744), (60, 1353682), (66, 1230620), (74, 1097580), (88, 922965), (110, 738372), (111, 731720), (120, 676841), (132, 615310), (148, 548790), (165, 492248), (185, 439032), (220, 369186), (222, 365860), (264, 307655), (296, 274395), (330, 246124), (370, 219516), (407, 199560), (440, 184593), (444, 182930), (555, 146344), (660, 123062), (740, 109758), (814, 99780), (888, 91465), (1110, 73172), (1221, 66520), (1320, 61531), (1480, 54879), (1628, 49890), (1663, 48840), (2035, 39912), (2220, 36586), (2442, 33260), (3256, 24945), (3326, 24420), (4070, 19956), (4440, 18293), (4884, 16630), (4989, 16280), (6105, 13304), (6652, 12210), (8140, 9978), (8315, 9768)]