20662420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14551}}^1$

素因数の和:14631

約数の個数: 24

約数和(自身を含む): 44005248

約数和(自身を除く): 23342828

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14551, 29102, 58204, 72755, 145510, 291020, 1033121, 2066242, 4132484, 5165605, 10331210, 20662420]

約数ペア:

[(1, 20662420), (2, 10331210), (4, 5165605), (5, 4132484), (10, 2066242), (20, 1033121), (71, 291020), (142, 145510), (284, 72755), (355, 58204), (710, 29102), (1420, 14551)]