1287890

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4441}}^1$

素因数の和:4477

約数の個数: 16

約数和(自身を含む): 2398680

約数和(自身を除く): 1110790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 4441, 8882, 22205, 44410, 128789, 257578, 643945, 1287890]

約数ペア:

[(1, 1287890), (2, 643945), (5, 257578), (10, 128789), (29, 44410), (58, 22205), (145, 8882), (290, 4441)]