21017065

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{811}}^1$

素因数の和:960

約数の個数: 16

約数和(自身を含む): 25958016

約数和(自身を除く): 4940951

約数列:

[1, 5, 71, 73, 355, 365, 811, 4055, 5183, 25915, 57581, 59203, 287905, 296015, 4203413, 21017065]

約数ペア:

[(1, 21017065), (5, 4203413), (71, 296015), (73, 287905), (355, 59203), (365, 57581), (811, 25915), (4055, 5183)]