87779420

素因数分解:

$2^2\times 5^1\times {\mathrm{4388971}}^1$

素因数の和:4388980

約数の個数: 12

約数和(自身を含む): 184336824

約数和(自身を除く): 96557404

約数列:

[1, 2, 4, 5, 10, 20, 4388971, 8777942, 17555884, 21944855, 43889710, 87779420]

約数ペア:

[(1, 87779420), (2, 43889710), (4, 21944855), (5, 17555884), (10, 8777942), (20, 4388971)]