42020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1$

素因数の和:211

約数の個数: 24

約数和(自身を含む): 96768

約数和(自身を除く): 54748

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 191, 220, 382, 764, 955, 1910, 2101, 3820, 4202, 8404, 10505, 21010, 42020]

約数ペア:

[(1, 42020), (2, 21010), (4, 10505), (5, 8404), (10, 4202), (11, 3820), (20, 2101), (22, 1910), (44, 955), (55, 764), (110, 382), (191, 220)]