18297680

素因数分解:

$2^4\times 5^1\times {\mathrm{331}}^1\times {\mathrm{691}}^1$

素因数の和:1035

約数の個数: 40

約数和(自身を含む): 42732384

約数和(自身を除く): 24434704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 331, 662, 691, 1324, 1382, 1655, 2648, 2764, 3310, 3455, 5296, 5528, 6620, 6910, 11056, 13240, 13820, 26480, 27640, 55280, 228721, 457442, 914884, 1143605, 1829768, 2287210, 3659536, 4574420, 9148840, 18297680]

約数ペア:

[(1, 18297680), (2, 9148840), (4, 4574420), (5, 3659536), (8, 2287210), (10, 1829768), (16, 1143605), (20, 914884), (40, 457442), (80, 228721), (331, 55280), (662, 27640), (691, 26480), (1324, 13820), (1382, 13240), (1655, 11056), (2648, 6910), (2764, 6620), (3310, 5528), (3455, 5296)]