21291127490

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{3691}}^1\times {\mathrm{19891}}^1$

素因数の和:23618

約数の個数: 32

約数和(自身を含む): 39658282560

約数和(自身を除く): 18367155070

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 3691, 7382, 18455, 19891, 36910, 39782, 99455, 107039, 198910, 214078, 535195, 576839, 1070390, 1153678, 2884195, 5768390, 73417681, 146835362, 367088405, 734176810, 2129112749, 4258225498, 10645563745, 21291127490]

約数ペア:

[(1, 21291127490), (2, 10645563745), (5, 4258225498), (10, 2129112749), (29, 734176810), (58, 367088405), (145, 146835362), (290, 73417681), (3691, 5768390), (7382, 2884195), (18455, 1153678), (19891, 1070390), (36910, 576839), (39782, 535195), (99455, 214078), (107039, 198910)]