21124490

素因数分解:

$2^1\times 5^1\times {\mathrm{1021}}^1\times {\mathrm{2069}}^1$

素因数の和:3097

約数の個数: 16

約数和(自身を含む): 38079720

約数和(自身を除く): 16955230

約数列:

[1, 2, 5, 10, 1021, 2042, 2069, 4138, 5105, 10210, 10345, 20690, 2112449, 4224898, 10562245, 21124490]

約数ペア:

[(1, 21124490), (2, 10562245), (5, 4224898), (10, 2112449), (1021, 20690), (2042, 10345), (2069, 10210), (4138, 5105)]