21271506565

素因数分解:

$5^1\times {\mathrm{307}}^1\times {\mathrm{821}}^1\times {\mathrm{16879}}^1$

素因数の和:18012

約数の個数: 16

約数和(自身を含む): 25641665280

約数和(自身を除く): 4370158715

約数列:

[1, 5, 307, 821, 1535, 4105, 16879, 84395, 252047, 1260235, 5181853, 13857659, 25909265, 69288295, 4254301313, 21271506565]

約数ペア:

[(1, 21271506565), (5, 4254301313), (307, 69288295), (821, 25909265), (1535, 13857659), (4105, 5181853), (16879, 1260235), (84395, 252047)]