20210031

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{1097}}^1$

素因数の和:1215

約数の個数: 24

約数和(自身を含む): 30831840

約数和(自身を除く): 10621809

約数列:

[1, 3, 9, 23, 69, 89, 207, 267, 801, 1097, 2047, 3291, 6141, 9873, 18423, 25231, 75693, 97633, 227079, 292899, 878697, 2245559, 6736677, 20210031]

約数ペア:

[(1, 20210031), (3, 6736677), (9, 2245559), (23, 878697), (69, 292899), (89, 227079), (207, 97633), (267, 75693), (801, 25231), (1097, 18423), (2047, 9873), (3291, 6141)]