8240420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{13291}}^1$

素因数の和:13331

約数の個数: 24

約数和(自身を含む): 17864448

約数和(自身を除く): 9624028

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 13291, 26582, 53164, 66455, 132910, 265820, 412021, 824042, 1648084, 2060105, 4120210, 8240420]

約数ペア:

[(1, 8240420), (2, 4120210), (4, 2060105), (5, 1648084), (10, 824042), (20, 412021), (31, 265820), (62, 132910), (124, 66455), (155, 53164), (310, 26582), (620, 13291)]