19980185

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{6353}}^1$

素因数の和:6412

約数の個数: 16

約数和(自身を含む): 26076816

約数和(自身を除く): 6096631

約数列:

[1, 5, 17, 37, 85, 185, 629, 3145, 6353, 31765, 108001, 235061, 540005, 1175305, 3996037, 19980185]

約数ペア:

[(1, 19980185), (5, 3996037), (17, 1175305), (37, 540005), (85, 235061), (185, 108001), (629, 31765), (3145, 6353)]