8220040

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2309}}^1$

素因数の和:2409

約数の個数: 32

約数和(自身を含む): 18711000

約数和(自身を除く): 10490960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 2309, 3560, 4618, 9236, 11545, 18472, 23090, 46180, 92360, 205501, 411002, 822004, 1027505, 1644008, 2055010, 4110020, 8220040]

約数ペア:

[(1, 8220040), (2, 4110020), (4, 2055010), (5, 1644008), (8, 1027505), (10, 822004), (20, 411002), (40, 205501), (89, 92360), (178, 46180), (356, 23090), (445, 18472), (712, 11545), (890, 9236), (1780, 4618), (2309, 3560)]