87649420

素因数分解:

$2^2\times 5^1\times {\mathrm{4382471}}^1$

素因数の和:4382480

約数の個数: 12

約数和(自身を含む): 184063824

約数和(自身を除く): 96414404

約数列:

[1, 2, 4, 5, 10, 20, 4382471, 8764942, 17529884, 21912355, 43824710, 87649420]

約数ペア:

[(1, 87649420), (2, 43824710), (4, 21912355), (5, 17529884), (10, 8764942), (20, 4382471)]