8520040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6871}}^1$

素因数の和:6913

約数の個数: 32

約数和(自身を含む): 19791360

約数和(自身を除く): 11271320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 6871, 13742, 27484, 34355, 54968, 68710, 137420, 213001, 274840, 426002, 852004, 1065005, 1704008, 2130010, 4260020, 8520040]

約数ペア:

[(1, 8520040), (2, 4260020), (4, 2130010), (5, 1704008), (8, 1065005), (10, 852004), (20, 426002), (31, 274840), (40, 213001), (62, 137420), (124, 68710), (155, 54968), (248, 34355), (310, 27484), (620, 13742), (1240, 6871)]