21057710

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{19319}}^1$

素因数の和:19435

約数の個数: 16

約数和(自身を含む): 38253600

約数和(自身を除く): 17195890

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 19319, 38638, 96595, 193190, 2105771, 4211542, 10528855, 21057710]

約数ペア:

[(1, 21057710), (2, 10528855), (5, 4211542), (10, 2105771), (109, 193190), (218, 96595), (545, 38638), (1090, 19319)]