28737585

素因数分解:

$3^4\times 5^1\times {\mathrm{70957}}^1$

素因数の和:70974

約数の個数: 20

約数和(自身を含む): 51515508

約数和(自身を除く): 22777923

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 70957, 212871, 354785, 638613, 1064355, 1915839, 3193065, 5747517, 9579195, 28737585]

約数ペア:

[(1, 28737585), (3, 9579195), (5, 5747517), (9, 3193065), (15, 1915839), (27, 1064355), (45, 638613), (81, 354785), (135, 212871), (405, 70957)]