8611640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1$

素因数の和:200

約数の個数: 64

約数和(自身を含む): 20412000

約数和(自身を除く): 11800360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 59, 82, 89, 118, 164, 178, 205, 236, 295, 328, 356, 410, 445, 472, 590, 712, 820, 890, 1180, 1640, 1780, 2360, 2419, 3560, 3649, 4838, 5251, 7298, 9676, 10502, 12095, 14596, 18245, 19352, 21004, 24190, 26255, 29192, 36490, 42008, 48380, 52510, 72980, 96760, 105020, 145960, 210040, 215291, 430582, 861164, 1076455, 1722328, 2152910, 4305820, 8611640]

約数ペア:

[(1, 8611640), (2, 4305820), (4, 2152910), (5, 1722328), (8, 1076455), (10, 861164), (20, 430582), (40, 215291), (41, 210040), (59, 145960), (82, 105020), (89, 96760), (118, 72980), (164, 52510), (178, 48380), (205, 42008), (236, 36490), (295, 29192), (328, 26255), (356, 24190), (410, 21004), (445, 19352), (472, 18245), (590, 14596), (712, 12095), (820, 10502), (890, 9676), (1180, 7298), (1640, 5251), (1780, 4838), (2360, 3649), (2419, 3560)]