20530135

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:243

約数の個数: 32

約数和(自身を含む): 27542592

約数和(自身を除く): 7012457

約数列:

[1, 5, 17, 41, 43, 85, 137, 205, 215, 685, 697, 731, 1763, 2329, 3485, 3655, 5617, 5891, 8815, 11645, 28085, 29455, 29971, 95489, 100147, 149855, 241531, 477445, 500735, 1207655, 4106027, 20530135]

約数ペア:

[(1, 20530135), (5, 4106027), (17, 1207655), (41, 500735), (43, 477445), (85, 241531), (137, 149855), (205, 100147), (215, 95489), (685, 29971), (697, 29455), (731, 28085), (1763, 11645), (2329, 8815), (3485, 5891), (3655, 5617)]