20321605

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{269}}^1\times {\mathrm{521}}^1$

素因数の和:824

約数の個数: 16

約数和(自身を含む): 25369200

約数和(自身を除く): 5047595

約数列:

[1, 5, 29, 145, 269, 521, 1345, 2605, 7801, 15109, 39005, 75545, 140149, 700745, 4064321, 20321605]

約数ペア:

[(1, 20321605), (5, 4064321), (29, 700745), (145, 140149), (269, 75545), (521, 39005), (1345, 15109), (2605, 7801)]