21012783

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{743}}^1\times {\mathrm{857}}^1$

素因数の和:1614

約数の個数: 16

約数和(自身を含む): 30640896

約数和(自身を除く): 9628113

約数列:

[1, 3, 11, 33, 743, 857, 2229, 2571, 8173, 9427, 24519, 28281, 636751, 1910253, 7004261, 21012783]

約数ペア:

[(1, 21012783), (3, 7004261), (11, 1910253), (33, 636751), (743, 28281), (857, 24519), (2229, 9427), (2571, 8173)]