21321780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{355363}}^1$

素因数の和:355375

約数の個数: 24

約数和(自身を含む): 59701152

約数和(自身を除く): 38379372

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 355363, 710726, 1066089, 1421452, 1776815, 2132178, 3553630, 4264356, 5330445, 7107260, 10660890, 21321780]

約数ペア:

[(1, 21321780), (2, 10660890), (3, 7107260), (4, 5330445), (5, 4264356), (6, 3553630), (10, 2132178), (12, 1776815), (15, 1421452), (20, 1066089), (30, 710726), (60, 355363)]