18859919

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{1399}}^1$

素因数の和:1490

約数の個数: 16

約数和(自身を含む): 21873600

約数和(自身を除く): 3013681

約数列:

[1, 13, 17, 61, 221, 793, 1037, 1399, 13481, 18187, 23783, 85339, 309179, 1109407, 1450763, 18859919]

約数ペア:

[(1, 18859919), (13, 1450763), (17, 1109407), (61, 309179), (221, 85339), (793, 23783), (1037, 18187), (1399, 13481)]