21721010

素因数分解:

$2^1\times 5^1\times {\mathrm{1303}}^1\times {\mathrm{1667}}^1$

素因数の和:2977

約数の個数: 16

約数和(自身を含む): 39151296

約数和(自身を除く): 17430286

約数列:

[1, 2, 5, 10, 1303, 1667, 2606, 3334, 6515, 8335, 13030, 16670, 2172101, 4344202, 10860505, 21721010]

約数ペア:

[(1, 21721010), (2, 10860505), (5, 4344202), (10, 2172101), (1303, 16670), (1667, 13030), (2606, 8335), (3334, 6515)]