21274490

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{2731}}^1$

素因数の和:2798

約数の個数: 32

約数和(自身を含む): 41307840

約数和(自身を除く): 20033350

約数列:

[1, 2, 5, 10, 19, 38, 41, 82, 95, 190, 205, 410, 779, 1558, 2731, 3895, 5462, 7790, 13655, 27310, 51889, 103778, 111971, 223942, 259445, 518890, 559855, 1119710, 2127449, 4254898, 10637245, 21274490]

約数ペア:

[(1, 21274490), (2, 10637245), (5, 4254898), (10, 2127449), (19, 1119710), (38, 559855), (41, 518890), (82, 259445), (95, 223942), (190, 111971), (205, 103778), (410, 51889), (779, 27310), (1558, 13655), (2731, 7790), (3895, 5462)]