28857220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{206123}}^1$

素因数の和:206139

約数の個数: 24

約数和(自身を含む): 69257664

約数和(自身を除く): 40400444

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 206123, 412246, 824492, 1030615, 1442861, 2061230, 2885722, 4122460, 5771444, 7214305, 14428610, 28857220]

約数ペア:

[(1, 28857220), (2, 14428610), (4, 7214305), (5, 5771444), (7, 4122460), (10, 2885722), (14, 2061230), (20, 1442861), (28, 1030615), (35, 824492), (70, 412246), (140, 206123)]