21920830

素因数分解:

$2^1\times 5^1\times {\mathrm{173}}^1\times {\mathrm{12671}}^1$

素因数の和:12851

約数の個数: 16

約数和(自身を含む): 39688704

約数和(自身を除く): 17767874

約数列:

[1, 2, 5, 10, 173, 346, 865, 1730, 12671, 25342, 63355, 126710, 2192083, 4384166, 10960415, 21920830]

約数ペア:

[(1, 21920830), (2, 10960415), (5, 4384166), (10, 2192083), (173, 126710), (346, 63355), (865, 25342), (1730, 12671)]