21045178

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{136657}}^1$

素因数の和:136677

約数の個数: 16

約数和(自身を含む): 39357504

約数和(自身を除く): 18312326

約数列:

[1, 2, 7, 11, 14, 22, 77, 154, 136657, 273314, 956599, 1503227, 1913198, 3006454, 10522589, 21045178]

約数ペア:

[(1, 21045178), (2, 10522589), (7, 3006454), (11, 1913198), (14, 1503227), (22, 956599), (77, 273314), (154, 136657)]