20266900

素因数分解:

$2^2\times 5^2\times {\mathrm{389}}^1\times {\mathrm{521}}^1$

素因数の和:924

約数の個数: 36

約数和(自身を含む): 44176860

約数和(自身を除く): 23909960

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 389, 521, 778, 1042, 1556, 1945, 2084, 2605, 3890, 5210, 7780, 9725, 10420, 13025, 19450, 26050, 38900, 52100, 202669, 405338, 810676, 1013345, 2026690, 4053380, 5066725, 10133450, 20266900]

約数ペア:

[(1, 20266900), (2, 10133450), (4, 5066725), (5, 4053380), (10, 2026690), (20, 1013345), (25, 810676), (50, 405338), (100, 202669), (389, 52100), (521, 38900), (778, 26050), (1042, 19450), (1556, 13025), (1945, 10420), (2084, 9725), (2605, 7780), (3890, 5210)]