20329280

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:172

約数の個数: 112

約数和(自身を含む): 53163216

約数和(自身を除く): 32833936

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 37, 40, 64, 68, 74, 80, 85, 101, 136, 148, 160, 170, 185, 202, 272, 296, 320, 340, 370, 404, 505, 544, 592, 629, 680, 740, 808, 1010, 1088, 1184, 1258, 1360, 1480, 1616, 1717, 2020, 2368, 2516, 2720, 2960, 3145, 3232, 3434, 3737, 4040, 5032, 5440, 5920, 6290, 6464, 6868, 7474, 8080, 8585, 10064, 11840, 12580, 13736, 14948, 16160, 17170, 18685, 20128, 25160, 27472, 29896, 32320, 34340, 37370, 40256, 50320, 54944, 59792, 63529, 68680, 74740, 100640, 109888, 119584, 127058, 137360, 149480, 201280, 239168, 254116, 274720, 298960, 317645, 508232, 549440, 597920, 635290, 1016464, 1195840, 1270580, 2032928, 2541160, 4065856, 5082320, 10164640, 20329280]

約数ペア:

[(1, 20329280), (2, 10164640), (4, 5082320), (5, 4065856), (8, 2541160), (10, 2032928), (16, 1270580), (17, 1195840), (20, 1016464), (32, 635290), (34, 597920), (37, 549440), (40, 508232), (64, 317645), (68, 298960), (74, 274720), (80, 254116), (85, 239168), (101, 201280), (136, 149480), (148, 137360), (160, 127058), (170, 119584), (185, 109888), (202, 100640), (272, 74740), (296, 68680), (320, 63529), (340, 59792), (370, 54944), (404, 50320), (505, 40256), (544, 37370), (592, 34340), (629, 32320), (680, 29896), (740, 27472), (808, 25160), (1010, 20128), (1088, 18685), (1184, 17170), (1258, 16160), (1360, 14948), (1480, 13736), (1616, 12580), (1717, 11840), (2020, 10064), (2368, 8585), (2516, 8080), (2720, 7474), (2960, 6868), (3145, 6464), (3232, 6290), (3434, 5920), (3737, 5440), (4040, 5032)]