20185420

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{4021}}^1$

素因数の和:4281

約数の個数: 24

約数和(自身を含む): 42568848

約数和(自身を除く): 22383428

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 4021, 5020, 8042, 16084, 20105, 40210, 80420, 1009271, 2018542, 4037084, 5046355, 10092710, 20185420]

約数ペア:

[(1, 20185420), (2, 10092710), (4, 5046355), (5, 4037084), (10, 2018542), (20, 1009271), (251, 80420), (502, 40210), (1004, 20105), (1255, 16084), (2510, 8042), (4021, 5020)]