21315365

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{10903}}^1$

素因数の和:10948

約数の個数: 16

約数和(自身を含む): 28263168

約数和(自身を除く): 6947803

約数列:

[1, 5, 17, 23, 85, 115, 391, 1955, 10903, 54515, 185351, 250769, 926755, 1253845, 4263073, 21315365]

約数ペア:

[(1, 21315365), (5, 4263073), (17, 1253845), (23, 926755), (85, 250769), (115, 185351), (391, 54515), (1955, 10903)]