21855260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{156109}}^1$

素因数の和:156125

約数の個数: 24

約数和(自身を含む): 52452960

約数和(自身を除く): 30597700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 156109, 312218, 624436, 780545, 1092763, 1561090, 2185526, 3122180, 4371052, 5463815, 10927630, 21855260]

約数ペア:

[(1, 21855260), (2, 10927630), (4, 5463815), (5, 4371052), (7, 3122180), (10, 2185526), (14, 1561090), (20, 1092763), (28, 780545), (35, 624436), (70, 312218), (140, 156109)]