20396425

素因数分解:

$5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4019}}^1$

素因数の和:4065

約数の個数: 24

約数和(自身を含む): 29908800

約数和(自身を除く): 9512375

約数列:

[1, 5, 7, 25, 29, 35, 145, 175, 203, 725, 1015, 4019, 5075, 20095, 28133, 100475, 116551, 140665, 582755, 703325, 815857, 2913775, 4079285, 20396425]

約数ペア:

[(1, 20396425), (5, 4079285), (7, 2913775), (25, 815857), (29, 703325), (35, 582755), (145, 140665), (175, 116551), (203, 100475), (725, 28133), (1015, 20095), (4019, 5075)]