681940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{4871}}^1$

素因数の和:4887

約数の個数: 24

約数和(自身を含む): 1636992

約数和(自身を除く): 955052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 4871, 9742, 19484, 24355, 34097, 48710, 68194, 97420, 136388, 170485, 340970, 681940]

約数ペア:

[(1, 681940), (2, 340970), (4, 170485), (5, 136388), (7, 97420), (10, 68194), (14, 48710), (20, 34097), (28, 24355), (35, 19484), (70, 9742), (140, 4871)]