21371757

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{491}}^1\times {\mathrm{1319}}^1$

素因数の和:1824

約数の個数: 16

約数和(自身を含む): 31173120

約数和(自身を除く): 9801363

約数列:

[1, 3, 11, 33, 491, 1319, 1473, 3957, 5401, 14509, 16203, 43527, 647629, 1942887, 7123919, 21371757]

約数ペア:

[(1, 21371757), (3, 7123919), (11, 1942887), (33, 647629), (491, 43527), (1319, 16203), (1473, 14509), (3957, 5401)]