20907730

素因数分解:

$2^1\times 5^1\times {\mathrm{521}}^1\times {\mathrm{4013}}^1$

素因数の和:4541

約数の個数: 16

約数和(自身を含む): 37715544

約数和(自身を除く): 16807814

約数列:

[1, 2, 5, 10, 521, 1042, 2605, 4013, 5210, 8026, 20065, 40130, 2090773, 4181546, 10453865, 20907730]

約数ペア:

[(1, 20907730), (2, 10453865), (5, 4181546), (10, 2090773), (521, 40130), (1042, 20065), (2605, 8026), (4013, 5210)]