66461900

素因数分解:

$2^2\times 5^2\times {\mathrm{664619}}^1$

素因数の和:664633

約数の個数: 18

約数和(自身を含む): 144222540

約数和(自身を除く): 77760640

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 664619, 1329238, 2658476, 3323095, 6646190, 13292380, 16615475, 33230950, 66461900]

約数ペア:

[(1, 66461900), (2, 33230950), (4, 16615475), (5, 13292380), (10, 6646190), (20, 3323095), (25, 2658476), (50, 1329238), (100, 664619)]