19218220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{137273}}^1$

素因数の和:137289

約数の個数: 24

約数和(自身を含む): 46124064

約数和(自身を除く): 26905844

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 137273, 274546, 549092, 686365, 960911, 1372730, 1921822, 2745460, 3843644, 4804555, 9609110, 19218220]

約数ペア:

[(1, 19218220), (2, 9609110), (4, 4804555), (5, 3843644), (7, 2745460), (10, 1921822), (14, 1372730), (20, 960911), (28, 686365), (35, 549092), (70, 274546), (140, 137273)]