20018265

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2707}}^1$

素因数の和:2761

約数の個数: 32

約数和(自身を含む): 35095680

約数和(自身を除く): 15077415

約数列:

[1, 3, 5, 15, 17, 29, 51, 85, 87, 145, 255, 435, 493, 1479, 2465, 2707, 7395, 8121, 13535, 40605, 46019, 78503, 138057, 230095, 235509, 392515, 690285, 1177545, 1334551, 4003653, 6672755, 20018265]

約数ペア:

[(1, 20018265), (3, 6672755), (5, 4003653), (15, 1334551), (17, 1177545), (29, 690285), (51, 392515), (85, 235509), (87, 230095), (145, 138057), (255, 78503), (435, 46019), (493, 40605), (1479, 13535), (2465, 8121), (2707, 7395)]