279734980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1998107}}^1$

素因数の和:1998123

約数の個数: 24

約数和(自身を含む): 671364288

約数和(自身を除く): 391629308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1998107, 3996214, 7992428, 9990535, 13986749, 19981070, 27973498, 39962140, 55946996, 69933745, 139867490, 279734980]

約数ペア:

[(1, 279734980), (2, 139867490), (4, 69933745), (5, 55946996), (7, 39962140), (10, 27973498), (14, 19981070), (20, 13986749), (28, 9990535), (35, 7992428), (70, 3996214), (140, 1998107)]