21261820

素因数分解:

$2^2\times 5^1\times {\mathrm{617}}^1\times {\mathrm{1723}}^1$

素因数の和:2349

約数の個数: 24

約数和(自身を含む): 44748144

約数和(自身を除く): 23486324

約数列:

[1, 2, 4, 5, 10, 20, 617, 1234, 1723, 2468, 3085, 3446, 6170, 6892, 8615, 12340, 17230, 34460, 1063091, 2126182, 4252364, 5315455, 10630910, 21261820]

約数ペア:

[(1, 21261820), (2, 10630910), (4, 5315455), (5, 4252364), (10, 2126182), (20, 1063091), (617, 34460), (1234, 17230), (1723, 12340), (2468, 8615), (3085, 6892), (3446, 6170)]