20419857

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{8693}}^1$

素因数の和:8734

約数の個数: 20

約数和(自身を含む): 31559220

約数和(自身を除く): 11139363

約数列:

[1, 3, 9, 27, 29, 81, 87, 261, 783, 2349, 8693, 26079, 78237, 234711, 252097, 704133, 756291, 2268873, 6806619, 20419857]

約数ペア:

[(1, 20419857), (3, 6806619), (9, 2268873), (27, 756291), (29, 704133), (81, 252097), (87, 234711), (261, 78237), (783, 26079), (2349, 8693)]