21249260

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{34273}}^1$

素因数の和:34313

約数の個数: 24

約数和(自身を含む): 46064256

約数和(自身を除く): 24814996

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 34273, 68546, 137092, 171365, 342730, 685460, 1062463, 2124926, 4249852, 5312315, 10624630, 21249260]

約数ペア:

[(1, 21249260), (2, 10624630), (4, 5312315), (5, 4249852), (10, 2124926), (20, 1062463), (31, 685460), (62, 342730), (124, 171365), (155, 137092), (310, 68546), (620, 34273)]