278804540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1991461}}^1$

素因数の和:1991477

約数の個数: 24

約数和(自身を含む): 669131232

約数和(自身を除く): 390326692

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1991461, 3982922, 7965844, 9957305, 13940227, 19914610, 27880454, 39829220, 55760908, 69701135, 139402270, 278804540]

約数ペア:

[(1, 278804540), (2, 139402270), (4, 69701135), (5, 55760908), (7, 39829220), (10, 27880454), (14, 19914610), (20, 13940227), (28, 9957305), (35, 7965844), (70, 3982922), (140, 1991461)]