90912980

素因数分解:

$2^2\times 5^1\times {\mathrm{1429}}^1\times {\mathrm{3181}}^1$

素因数の和:4619

約数の個数: 24

約数和(自身を含む): 191110920

約数和(自身を除く): 100197940

約数列:

[1, 2, 4, 5, 10, 20, 1429, 2858, 3181, 5716, 6362, 7145, 12724, 14290, 15905, 28580, 31810, 63620, 4545649, 9091298, 18182596, 22728245, 45456490, 90912980]

約数ペア:

[(1, 90912980), (2, 45456490), (4, 22728245), (5, 18182596), (10, 9091298), (20, 4545649), (1429, 63620), (2858, 31810), (3181, 28580), (5716, 15905), (6362, 14290), (7145, 12724)]