21398500

素因数分解:

$2^2\times 5^3\times {\mathrm{42797}}^1$

素因数の和:42816

約数の個数: 24

約数和(自身を含む): 46735416

約数和(自身を除く): 25336916

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 42797, 85594, 171188, 213985, 427970, 855940, 1069925, 2139850, 4279700, 5349625, 10699250, 21398500]

約数ペア:

[(1, 21398500), (2, 10699250), (4, 5349625), (5, 4279700), (10, 2139850), (20, 1069925), (25, 855940), (50, 427970), (100, 213985), (125, 171188), (250, 85594), (500, 42797)]