21550970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{307871}}^1$

素因数の和:307885

約数の個数: 16

約数和(自身を含む): 44333568

約数和(自身を除く): 22782598

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 307871, 615742, 1539355, 2155097, 3078710, 4310194, 10775485, 21550970]

約数ペア:

[(1, 21550970), (2, 10775485), (5, 4310194), (7, 3078710), (10, 2155097), (14, 1539355), (35, 615742), (70, 307871)]