405985996

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{433}}^1$

素因数の和:555

約数の個数: 72

約数和(自身を含む): 822811920

約数和(自身を除く): 416825924

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 73, 76, 146, 169, 247, 292, 338, 433, 494, 676, 866, 949, 988, 1387, 1732, 1898, 2774, 3211, 3796, 5548, 5629, 6422, 8227, 11258, 12337, 12844, 16454, 18031, 22516, 24674, 31609, 32908, 36062, 49348, 63218, 72124, 73177, 106951, 126436, 146354, 213902, 234403, 292708, 410917, 427804, 468806, 600571, 821834, 937612, 1201142, 1390363, 1643668, 2402284, 2780726, 5341921, 5561452, 7807423, 10683842, 15614846, 21367684, 31229692, 101496499, 202992998, 405985996]

約数ペア:

[(1, 405985996), (2, 202992998), (4, 101496499), (13, 31229692), (19, 21367684), (26, 15614846), (38, 10683842), (52, 7807423), (73, 5561452), (76, 5341921), (146, 2780726), (169, 2402284), (247, 1643668), (292, 1390363), (338, 1201142), (433, 937612), (494, 821834), (676, 600571), (866, 468806), (949, 427804), (988, 410917), (1387, 292708), (1732, 234403), (1898, 213902), (2774, 146354), (3211, 126436), (3796, 106951), (5548, 73177), (5629, 72124), (6422, 63218), (8227, 49348), (11258, 36062), (12337, 32908), (12844, 31609), (16454, 24674), (18031, 22516)]