18239985

素因数分解:

$3^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1553}}^1$

素因数の和:1599

約数の個数: 40

約数和(自身を含む): 33846120

約数和(自身を除く): 15606135

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 81, 87, 135, 145, 261, 405, 435, 783, 1305, 1553, 2349, 3915, 4659, 7765, 11745, 13977, 23295, 41931, 45037, 69885, 125793, 135111, 209655, 225185, 405333, 628965, 675555, 1215999, 2026665, 3647997, 6079995, 18239985]

約数ペア:

[(1, 18239985), (3, 6079995), (5, 3647997), (9, 2026665), (15, 1215999), (27, 675555), (29, 628965), (45, 405333), (81, 225185), (87, 209655), (135, 135111), (145, 125793), (261, 69885), (405, 45037), (435, 41931), (783, 23295), (1305, 13977), (1553, 11745), (2349, 7765), (3915, 4659)]