21270310

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{111949}}^1$

素因数の和:111975

約数の個数: 16

約数和(自身を含む): 40302000

約数和(自身を除く): 19031690

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 111949, 223898, 559745, 1119490, 2127031, 4254062, 10635155, 21270310]

約数ペア:

[(1, 21270310), (2, 10635155), (5, 4254062), (10, 2127031), (19, 1119490), (38, 559745), (95, 223898), (190, 111949)]