21087665

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{233}}^1\times {\mathrm{787}}^1$

素因数の和:1048

約数の個数: 16

約数和(自身を含む): 26552448

約数和(自身を除く): 5464783

約数列:

[1, 5, 23, 115, 233, 787, 1165, 3935, 5359, 18101, 26795, 90505, 183371, 916855, 4217533, 21087665]

約数ペア:

[(1, 21087665), (5, 4217533), (23, 916855), (115, 183371), (233, 90505), (787, 26795), (1165, 18101), (3935, 5359)]