81425830

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{428557}}^1$

素因数の和:428583

約数の個数: 16

約数和(自身を含む): 154280880

約数和(自身を除く): 72855050

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 428557, 857114, 2142785, 4285570, 8142583, 16285166, 40712915, 81425830]

約数ペア:

[(1, 81425830), (2, 40712915), (5, 16285166), (10, 8142583), (19, 4285570), (38, 2142785), (95, 857114), (190, 428557)]