27805220

素因数分解:

$2^2\times 5^1\times {\mathrm{181}}^1\times {\mathrm{7681}}^1$

素因数の和:7871

約数の個数: 24

約数和(自身を含む): 58721208

約数和(自身を除く): 30915988

約数列:

[1, 2, 4, 5, 10, 20, 181, 362, 724, 905, 1810, 3620, 7681, 15362, 30724, 38405, 76810, 153620, 1390261, 2780522, 5561044, 6951305, 13902610, 27805220]

約数ペア:

[(1, 27805220), (2, 13902610), (4, 6951305), (5, 5561044), (10, 2780522), (20, 1390261), (181, 153620), (362, 76810), (724, 38405), (905, 30724), (1810, 15362), (3620, 7681)]