21800565

素因数分解:

$3^2\times 5^1\times {\mathrm{484457}}^1$

素因数の和:484468

約数の個数: 12

約数和(自身を含む): 37787724

約数和(自身を除く): 15987159

約数列:

[1, 3, 5, 9, 15, 45, 484457, 1453371, 2422285, 4360113, 7266855, 21800565]

約数ペア:

[(1, 21800565), (3, 7266855), (5, 4360113), (9, 2422285), (15, 1453371), (45, 484457)]