8400920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{313}}^1$

素因数の和:396

約数の個数: 64

約数和(自身を含む): 21025440

約数和(自身を除く): 12624520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 61, 88, 110, 122, 220, 244, 305, 313, 440, 488, 610, 626, 671, 1220, 1252, 1342, 1565, 2440, 2504, 2684, 3130, 3355, 3443, 5368, 6260, 6710, 6886, 12520, 13420, 13772, 17215, 19093, 26840, 27544, 34430, 38186, 68860, 76372, 95465, 137720, 152744, 190930, 210023, 381860, 420046, 763720, 840092, 1050115, 1680184, 2100230, 4200460, 8400920]

約数ペア:

[(1, 8400920), (2, 4200460), (4, 2100230), (5, 1680184), (8, 1050115), (10, 840092), (11, 763720), (20, 420046), (22, 381860), (40, 210023), (44, 190930), (55, 152744), (61, 137720), (88, 95465), (110, 76372), (122, 68860), (220, 38186), (244, 34430), (305, 27544), (313, 26840), (440, 19093), (488, 17215), (610, 13772), (626, 13420), (671, 12520), (1220, 6886), (1252, 6710), (1342, 6260), (1565, 5368), (2440, 3443), (2504, 3355), (2684, 3130)]