21940840

素因数分解:

$2^3\times 5^1\times {\mathrm{548521}}^1$

素因数の和:548532

約数の個数: 16

約数和(自身を含む): 49366980

約数和(自身を除く): 27426140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 548521, 1097042, 2194084, 2742605, 4388168, 5485210, 10970420, 21940840]

約数ペア:

[(1, 21940840), (2, 10970420), (4, 5485210), (5, 4388168), (8, 2742605), (10, 2194084), (20, 1097042), (40, 548521)]