20878605

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42179}}^1$

素因数の和:42201

約数の個数: 24

約数和(自身を含む): 39480480

約数和(自身を除く): 18601875

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 42179, 126537, 210895, 379611, 463969, 632685, 1391907, 1898055, 2319845, 4175721, 6959535, 20878605]

約数ペア:

[(1, 20878605), (3, 6959535), (5, 4175721), (9, 2319845), (11, 1898055), (15, 1391907), (33, 632685), (45, 463969), (55, 379611), (99, 210895), (165, 126537), (495, 42179)]