640422

素因数分解:

$2^1\times 3^2\times {\mathrm{47}}^1\times {\mathrm{757}}^1$

素因数の和:812

約数の個数: 24

約数和(自身を含む): 1418976

約数和(自身を除く): 778554

約数列:

[1, 2, 3, 6, 9, 18, 47, 94, 141, 282, 423, 757, 846, 1514, 2271, 4542, 6813, 13626, 35579, 71158, 106737, 213474, 320211, 640422]

約数ペア:

[(1, 640422), (2, 320211), (3, 213474), (6, 106737), (9, 71158), (18, 35579), (47, 13626), (94, 6813), (141, 4542), (282, 2271), (423, 1514), (757, 846)]