81465460

素因数分解:

$2^2\times 5^1\times {\mathrm{1013}}^1\times {\mathrm{4021}}^1$

素因数の和:5043

約数の個数: 24

約数和(自身を含む): 171288936

約数和(自身を除く): 89823476

約数列:

[1, 2, 4, 5, 10, 20, 1013, 2026, 4021, 4052, 5065, 8042, 10130, 16084, 20105, 20260, 40210, 80420, 4073273, 8146546, 16293092, 20366365, 40732730, 81465460]

約数ペア:

[(1, 81465460), (2, 40732730), (4, 20366365), (5, 16293092), (10, 8146546), (20, 4073273), (1013, 80420), (2026, 40210), (4021, 20260), (4052, 20105), (5065, 16084), (8042, 10130)]