21261195

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15241}}^1$

素因数の和:15283

約数の個数: 24

約数和(自身を含む): 38044032

約数和(自身を除く): 16782837

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 15241, 45723, 76205, 137169, 228615, 472471, 685845, 1417413, 2362355, 4252239, 7087065, 21261195]

約数ペア:

[(1, 21261195), (3, 7087065), (5, 4252239), (9, 2362355), (15, 1417413), (31, 685845), (45, 472471), (93, 228615), (155, 137169), (279, 76205), (465, 45723), (1395, 15241)]