21238578

素因数分解:

$2^1\times 3^3\times {\mathrm{541}}^1\times {\mathrm{727}}^1$

素因数の和:1279

約数の個数: 32

約数和(自身を含む): 47349120

約数和(自身を除く): 26110542

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 541, 727, 1082, 1454, 1623, 2181, 3246, 4362, 4869, 6543, 9738, 13086, 14607, 19629, 29214, 39258, 393307, 786614, 1179921, 2359842, 3539763, 7079526, 10619289, 21238578]

約数ペア:

[(1, 21238578), (2, 10619289), (3, 7079526), (6, 3539763), (9, 2359842), (18, 1179921), (27, 786614), (54, 393307), (541, 39258), (727, 29214), (1082, 19629), (1454, 14607), (1623, 13086), (2181, 9738), (3246, 6543), (4362, 4869)]