278345620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1988183}}^1$

素因数の和:1988199

約数の個数: 24

約数和(自身を含む): 668029824

約数和(自身を除く): 389684204

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1988183, 3976366, 7952732, 9940915, 13917281, 19881830, 27834562, 39763660, 55669124, 69586405, 139172810, 278345620]

約数ペア:

[(1, 278345620), (2, 139172810), (4, 69586405), (5, 55669124), (7, 39763660), (10, 27834562), (14, 19881830), (20, 13917281), (28, 9940915), (35, 7952732), (70, 3976366), (140, 1988183)]