20818190

素因数分解:

$2^1\times 5^1\times {\mathrm{1021}}^1\times {\mathrm{2039}}^1$

素因数の和:3067

約数の個数: 16

約数和(自身を含む): 37527840

約数和(自身を除く): 16709650

約数列:

[1, 2, 5, 10, 1021, 2039, 2042, 4078, 5105, 10195, 10210, 20390, 2081819, 4163638, 10409095, 20818190]

約数ペア:

[(1, 20818190), (2, 10409095), (5, 4163638), (10, 2081819), (1021, 20390), (2039, 10210), (2042, 10195), (4078, 5105)]