18989305

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{359}}^1$

素因数の和:584

約数の個数: 16

約数和(自身を含む): 23328000

約数和(自身を除く): 4338695

約数列:

[1, 5, 71, 149, 355, 359, 745, 1795, 10579, 25489, 52895, 53491, 127445, 267455, 3797861, 18989305]

約数ペア:

[(1, 18989305), (5, 3797861), (71, 267455), (149, 127445), (355, 53491), (359, 52895), (745, 25489), (1795, 10579)]