81630325

素因数分解:

$5^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1801}}^1$

素因数の和:1862

約数の個数: 36

約数和(自身を含む): 120997092

約数和(自身を除く): 39366767

約数列:

[1, 5, 7, 25, 35, 37, 49, 175, 185, 245, 259, 925, 1225, 1295, 1801, 1813, 6475, 9005, 9065, 12607, 45025, 45325, 63035, 66637, 88249, 315175, 333185, 441245, 466459, 1665925, 2206225, 2332295, 3265213, 11661475, 16326065, 81630325]

約数ペア:

[(1, 81630325), (5, 16326065), (7, 11661475), (25, 3265213), (35, 2332295), (37, 2206225), (49, 1665925), (175, 466459), (185, 441245), (245, 333185), (259, 315175), (925, 88249), (1225, 66637), (1295, 63035), (1801, 45325), (1813, 45025), (6475, 12607), (9005, 9065)]