18425360

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2113}}^1$

素因数の和:2235

約数の個数: 40

約数和(自身を含む): 43252440

約数和(自身を除く): 24827080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2113, 2180, 4226, 4360, 8452, 8720, 10565, 16904, 21130, 33808, 42260, 84520, 169040, 230317, 460634, 921268, 1151585, 1842536, 2303170, 3685072, 4606340, 9212680, 18425360]

約数ペア:

[(1, 18425360), (2, 9212680), (4, 4606340), (5, 3685072), (8, 2303170), (10, 1842536), (16, 1151585), (20, 921268), (40, 460634), (80, 230317), (109, 169040), (218, 84520), (436, 42260), (545, 33808), (872, 21130), (1090, 16904), (1744, 10565), (2113, 8720), (2180, 8452), (4226, 4360)]