20407735

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{487}}^1$

素因数の和:555

約数の個数: 24

約数和(自身を含む): 26966880

約数和(自身を除く): 6559145

約数列:

[1, 5, 17, 29, 85, 145, 289, 487, 493, 1445, 2435, 2465, 8279, 8381, 14123, 41395, 41905, 70615, 140743, 240091, 703715, 1200455, 4081547, 20407735]

約数ペア:

[(1, 20407735), (5, 4081547), (17, 1200455), (29, 703715), (85, 240091), (145, 140743), (289, 70615), (487, 41905), (493, 41395), (1445, 14123), (2435, 8381), (2465, 8279)]