21086915

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{3547}}^1$

素因数の和:3622

約数の個数: 16

約数和(自身を含む): 26822880

約数和(自身を除く): 5735965

約数列:

[1, 5, 29, 41, 145, 205, 1189, 3547, 5945, 17735, 102863, 145427, 514315, 727135, 4217383, 21086915]

約数ペア:

[(1, 21086915), (5, 4217383), (29, 727135), (41, 514315), (145, 145427), (205, 102863), (1189, 17735), (3547, 5945)]