19997865

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{26141}}^1$

素因数の和:26169

約数の個数: 24

約数和(自身を含む): 36703368

約数和(自身を除く): 16705503

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 26141, 78423, 130705, 235269, 392115, 444397, 1176345, 1333191, 2221985, 3999573, 6665955, 19997865]

約数ペア:

[(1, 19997865), (3, 6665955), (5, 3999573), (9, 2221985), (15, 1333191), (17, 1176345), (45, 444397), (51, 392115), (85, 235269), (153, 130705), (255, 78423), (765, 26141)]