12957640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{7901}}^1$

素因数の和:7953

約数の個数: 32

約数和(自身を含む): 29869560

約数和(自身を除く): 16911920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 7901, 15802, 31604, 39505, 63208, 79010, 158020, 316040, 323941, 647882, 1295764, 1619705, 2591528, 3239410, 6478820, 12957640]

約数ペア:

[(1, 12957640), (2, 6478820), (4, 3239410), (5, 2591528), (8, 1619705), (10, 1295764), (20, 647882), (40, 323941), (41, 316040), (82, 158020), (164, 79010), (205, 63208), (328, 39505), (410, 31604), (820, 15802), (1640, 7901)]