20921349

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{1033}}^1$

素因数の和:1236

約数の個数: 16

約数和(自身を含む): 28753472

約数和(自身を除く): 7832123

約数列:

[1, 3, 43, 129, 157, 471, 1033, 3099, 6751, 20253, 44419, 133257, 162181, 486543, 6973783, 20921349]

約数ペア:

[(1, 20921349), (3, 6973783), (43, 486543), (129, 162181), (157, 133257), (471, 44419), (1033, 20253), (3099, 6751)]