21900138

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{280771}}^1$

素因数の和:280789

約数の個数: 16

約数和(自身を含む): 47169696

約数和(自身を除く): 25269558

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 280771, 561542, 842313, 1684626, 3650023, 7300046, 10950069, 21900138]

約数ペア:

[(1, 21900138), (2, 10950069), (3, 7300046), (6, 3650023), (13, 1684626), (26, 842313), (39, 561542), (78, 280771)]