20010725

素因数分解:

$5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3943}}^1$

素因数の和:3989

約数の個数: 24

約数和(自身を含む): 29343360

約数和(自身を除く): 9332635

約数列:

[1, 5, 7, 25, 29, 35, 145, 175, 203, 725, 1015, 3943, 5075, 19715, 27601, 98575, 114347, 138005, 571735, 690025, 800429, 2858675, 4002145, 20010725]

約数ペア:

[(1, 20010725), (5, 4002145), (7, 2858675), (25, 800429), (29, 690025), (35, 571735), (145, 138005), (175, 114347), (203, 98575), (725, 27601), (1015, 19715), (3943, 5075)]