201909903

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{521}}^1\times {\mathrm{523}}^1$

素因数の和:1079

約数の個数: 32

約数和(自身を含む): 306351360

約数和(自身を除く): 104441457

約数列:

[1, 3, 13, 19, 39, 57, 247, 521, 523, 741, 1563, 1569, 6773, 6799, 9899, 9937, 20319, 20397, 29697, 29811, 128687, 129181, 272483, 386061, 387543, 817449, 3542279, 5177177, 10626837, 15531531, 67303301, 201909903]

約数ペア:

[(1, 201909903), (3, 67303301), (13, 15531531), (19, 10626837), (39, 5177177), (57, 3542279), (247, 817449), (521, 387543), (523, 386061), (741, 272483), (1563, 129181), (1569, 128687), (6773, 29811), (6799, 29697), (9899, 20397), (9937, 20319)]