256354420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1831103}}^1$

素因数の和:1831119

約数の個数: 24

約数和(自身を含む): 615250944

約数和(自身を除く): 358896524

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1831103, 3662206, 7324412, 9155515, 12817721, 18311030, 25635442, 36622060, 51270884, 64088605, 128177210, 256354420]

約数ペア:

[(1, 256354420), (2, 128177210), (4, 64088605), (5, 51270884), (7, 36622060), (10, 25635442), (14, 18311030), (20, 12817721), (28, 9155515), (35, 7324412), (70, 3662206), (140, 1831103)]