21731481

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{277}}^1\times {\mathrm{379}}^1$

素因数の和:685

約数の個数: 24

約数和(自身を含む): 32959680

約数和(自身を除く): 11228199

約数列:

[1, 3, 9, 23, 69, 207, 277, 379, 831, 1137, 2493, 3411, 6371, 8717, 19113, 26151, 57339, 78453, 104983, 314949, 944847, 2414609, 7243827, 21731481]

約数ペア:

[(1, 21731481), (3, 7243827), (9, 2414609), (23, 944847), (69, 314949), (207, 104983), (277, 78453), (379, 57339), (831, 26151), (1137, 19113), (2493, 8717), (3411, 6371)]