21298021220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{152128723}}^1$

素因数の和:152128739

約数の個数: 24

約数和(自身を含む): 51115251264

約数和(自身を除く): 29817230044

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 152128723, 304257446, 608514892, 760643615, 1064901061, 1521287230, 2129802122, 3042574460, 4259604244, 5324505305, 10649010610, 21298021220]

約数ペア:

[(1, 21298021220), (2, 10649010610), (4, 5324505305), (5, 4259604244), (7, 3042574460), (10, 2129802122), (14, 1521287230), (20, 1064901061), (28, 760643615), (35, 608514892), (70, 304257446), (140, 152128723)]