21781110

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55849}}^1$

素因数の和:55872

約数の個数: 32

約数和(自身を含む): 56296800

約数和(自身を除く): 34515690

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55849, 111698, 167547, 279245, 335094, 558490, 726037, 837735, 1452074, 1675470, 2178111, 3630185, 4356222, 7260370, 10890555, 21781110]

約数ペア:

[(1, 21781110), (2, 10890555), (3, 7260370), (5, 4356222), (6, 3630185), (10, 2178111), (13, 1675470), (15, 1452074), (26, 837735), (30, 726037), (39, 558490), (65, 335094), (78, 279245), (130, 167547), (195, 111698), (390, 55849)]