20018907

素因数分解:

$3^4\times {\mathrm{101}}^1\times {\mathrm{2447}}^1$

素因数の和:2560

約数の個数: 20

約数和(自身を含む): 30213216

約数和(自身を除く): 10194309

約数列:

[1, 3, 9, 27, 81, 101, 303, 909, 2447, 2727, 7341, 8181, 22023, 66069, 198207, 247147, 741441, 2224323, 6672969, 20018907]

約数ペア:

[(1, 20018907), (3, 6672969), (9, 2224323), (27, 741441), (81, 247147), (101, 198207), (303, 66069), (909, 22023), (2447, 8181), (2727, 7341)]