28742445

素因数分解:

$3^4\times 5^1\times {\mathrm{70969}}^1$

素因数の和:70986

約数の個数: 20

約数和(自身を含む): 51524220

約数和(自身を除く): 22781775

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 70969, 212907, 354845, 638721, 1064535, 1916163, 3193605, 5748489, 9580815, 28742445]

約数ペア:

[(1, 28742445), (3, 9580815), (5, 5748489), (9, 3193605), (15, 1916163), (27, 1064535), (45, 638721), (81, 354845), (135, 212907), (405, 70969)]