19812490

素因数分解:

$2^1\times 5^1\times {\mathrm{557}}^1\times {\mathrm{3557}}^1$

素因数の和:4121

約数の個数: 16

約数和(自身を含む): 35736552

約数和(自身を除く): 15924062

約数列:

[1, 2, 5, 10, 557, 1114, 2785, 3557, 5570, 7114, 17785, 35570, 1981249, 3962498, 9906245, 19812490]

約数ペア:

[(1, 19812490), (2, 9906245), (5, 3962498), (10, 1981249), (557, 35570), (1114, 17785), (2785, 7114), (3557, 5570)]