21062990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1$

素因数の和:237

約数の個数: 64

約数和(自身を含む): 43666560

約数和(自身を除く): 22603570

約数列:

[1, 2, 5, 10, 13, 26, 29, 37, 58, 65, 74, 130, 145, 151, 185, 290, 302, 370, 377, 481, 754, 755, 962, 1073, 1510, 1885, 1963, 2146, 2405, 3770, 3926, 4379, 4810, 5365, 5587, 8758, 9815, 10730, 11174, 13949, 19630, 21895, 27898, 27935, 43790, 55870, 56927, 69745, 72631, 113854, 139490, 145262, 162023, 284635, 324046, 363155, 569270, 726310, 810115, 1620230, 2106299, 4212598, 10531495, 21062990]

約数ペア:

[(1, 21062990), (2, 10531495), (5, 4212598), (10, 2106299), (13, 1620230), (26, 810115), (29, 726310), (37, 569270), (58, 363155), (65, 324046), (74, 284635), (130, 162023), (145, 145262), (151, 139490), (185, 113854), (290, 72631), (302, 69745), (370, 56927), (377, 55870), (481, 43790), (754, 27935), (755, 27898), (962, 21895), (1073, 19630), (1510, 13949), (1885, 11174), (1963, 10730), (2146, 9815), (2405, 8758), (3770, 5587), (3926, 5365), (4379, 4810)]