64746280

素因数分解:

$2^3\times 5^1\times {\mathrm{971}}^1\times {\mathrm{1667}}^1$

素因数の和:2649

約数の個数: 32

約数和(自身を含む): 145916640

約数和(自身を除く): 81170360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 971, 1667, 1942, 3334, 3884, 4855, 6668, 7768, 8335, 9710, 13336, 16670, 19420, 33340, 38840, 66680, 1618657, 3237314, 6474628, 8093285, 12949256, 16186570, 32373140, 64746280]

約数ペア:

[(1, 64746280), (2, 32373140), (4, 16186570), (5, 12949256), (8, 8093285), (10, 6474628), (20, 3237314), (40, 1618657), (971, 66680), (1667, 38840), (1942, 33340), (3334, 19420), (3884, 16670), (4855, 13336), (6668, 9710), (7768, 8335)]