21579761

素因数分解:

$7^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1\times {\mathrm{233}}^1$

素因数の和:472

約数の個数: 16

約数和(自身を含む): 25204608

約数和(自身を除く): 3624847

約数列:

[1, 7, 101, 131, 233, 707, 917, 1631, 13231, 23533, 30523, 92617, 164731, 213661, 3082823, 21579761]

約数ペア:

[(1, 21579761), (7, 3082823), (101, 213661), (131, 164731), (233, 92617), (707, 30523), (917, 23533), (1631, 13231)]