811916920

素因数分解:

$2^3\times 5^1\times {\mathrm{997}}^1\times {\mathrm{20359}}^1$

素因数の和:21367

約数の個数: 32

約数和(自身を含む): 1828735200

約数和(自身を除く): 1016818280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 997, 1994, 3988, 4985, 7976, 9970, 19940, 20359, 39880, 40718, 81436, 101795, 162872, 203590, 407180, 814360, 20297923, 40595846, 81191692, 101489615, 162383384, 202979230, 405958460, 811916920]

約数ペア:

[(1, 811916920), (2, 405958460), (4, 202979230), (5, 162383384), (8, 101489615), (10, 81191692), (20, 40595846), (40, 20297923), (997, 814360), (1994, 407180), (3988, 203590), (4985, 162872), (7976, 101795), (9970, 81436), (19940, 40718), (20359, 39880)]