18658855

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{997}}^1$

素因数の和:1218

約数の個数: 16

約数和(自身を含む): 23712480

約数和(自身を除く): 5053625

約数列:

[1, 5, 19, 95, 197, 985, 997, 3743, 4985, 18715, 18943, 94715, 196409, 982045, 3731771, 18658855]

約数ペア:

[(1, 18658855), (5, 3731771), (19, 982045), (95, 196409), (197, 94715), (985, 18943), (997, 18715), (3743, 4985)]