20994020

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{12647}}^1$

素因数の和:12739

約数の個数: 24

約数和(自身を含む): 44622144

約数和(自身を除く): 23628124

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 12647, 25294, 50588, 63235, 126470, 252940, 1049701, 2099402, 4198804, 5248505, 10497010, 20994020]

約数ペア:

[(1, 20994020), (2, 10497010), (4, 5248505), (5, 4198804), (10, 2099402), (20, 1049701), (83, 252940), (166, 126470), (332, 63235), (415, 50588), (830, 25294), (1660, 12647)]