21801949

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1447}}^1$

素因数の和:1540

約数の個数: 16

約数和(自身を含む): 25137280

約数和(自身を除く): 3335331

約数列:

[1, 13, 19, 61, 247, 793, 1159, 1447, 15067, 18811, 27493, 88267, 357409, 1147471, 1677073, 21801949]

約数ペア:

[(1, 21801949), (13, 1677073), (19, 1147471), (61, 357409), (247, 88267), (793, 27493), (1159, 18811), (1447, 15067)]