20215540

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{4027}}^1$

素因数の和:4287

約数の個数: 24

約数和(自身を含む): 42632352

約数和(自身を除く): 22416812

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 4027, 5020, 8054, 16108, 20135, 40270, 80540, 1010777, 2021554, 4043108, 5053885, 10107770, 20215540]

約数ペア:

[(1, 20215540), (2, 10107770), (4, 5053885), (5, 4043108), (10, 2021554), (20, 1010777), (251, 80540), (502, 40270), (1004, 20135), (1255, 16108), (2510, 8054), (4027, 5020)]