20678420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{147703}}^1$

素因数の和:147719

約数の個数: 24

約数和(自身を含む): 49628544

約数和(自身を除く): 28950124

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 147703, 295406, 590812, 738515, 1033921, 1477030, 2067842, 2954060, 4135684, 5169605, 10339210, 20678420]

約数ペア:

[(1, 20678420), (2, 10339210), (4, 5169605), (5, 4135684), (7, 2954060), (10, 2067842), (14, 1477030), (20, 1033921), (28, 738515), (35, 590812), (70, 295406), (140, 147703)]