20576900

素因数分解:

$2^2\times 5^2\times {\mathrm{149}}^1\times {\mathrm{1381}}^1$

素因数の和:1544

約数の個数: 36

約数和(自身を含む): 44984100

約数和(自身を除く): 24407200

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 149, 298, 596, 745, 1381, 1490, 2762, 2980, 3725, 5524, 6905, 7450, 13810, 14900, 27620, 34525, 69050, 138100, 205769, 411538, 823076, 1028845, 2057690, 4115380, 5144225, 10288450, 20576900]

約数ペア:

[(1, 20576900), (2, 10288450), (4, 5144225), (5, 4115380), (10, 2057690), (20, 1028845), (25, 823076), (50, 411538), (100, 205769), (149, 138100), (298, 69050), (596, 34525), (745, 27620), (1381, 14900), (1490, 13810), (2762, 7450), (2980, 6905), (3725, 5524)]