390232420

素因数分解:

$2^2\times 5^1\times {\mathrm{19511621}}^1$

素因数の和:19511630

約数の個数: 12

約数和(自身を含む): 819488124

約数和(自身を除く): 429255704

約数列:

[1, 2, 4, 5, 10, 20, 19511621, 39023242, 78046484, 97558105, 195116210, 390232420]

約数ペア:

[(1, 390232420), (2, 195116210), (4, 97558105), (5, 78046484), (10, 39023242), (20, 19511621)]