18991737

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{1229}}^1$

素因数の和:1353

約数の個数: 24

約数和(自身を含む): 29357640

約数和(自身を除く): 10365903

約数列:

[1, 3, 9, 17, 51, 101, 153, 303, 909, 1229, 1717, 3687, 5151, 11061, 15453, 20893, 62679, 124129, 188037, 372387, 1117161, 2110193, 6330579, 18991737]

約数ペア:

[(1, 18991737), (3, 6330579), (9, 2110193), (17, 1117161), (51, 372387), (101, 188037), (153, 124129), (303, 62679), (909, 20893), (1229, 15453), (1717, 11061), (3687, 5151)]