21556145

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{541}}^1\times {\mathrm{613}}^1$

素因数の和:1172

約数の個数: 16

約数和(自身を含む): 27954192

約数和(自身を除く): 6398047

約数列:

[1, 5, 13, 65, 541, 613, 2705, 3065, 7033, 7969, 35165, 39845, 331633, 1658165, 4311229, 21556145]

約数ペア:

[(1, 21556145), (5, 4311229), (13, 1658165), (65, 331633), (541, 39845), (613, 35165), (2705, 7969), (3065, 7033)]