21396765

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{613}}^1$

素因数の和:813

約数の個数: 32

約数和(自身を含む): 37134720

約数和(自身を除く): 15737955

約数列:

[1, 3, 5, 13, 15, 39, 65, 179, 195, 537, 613, 895, 1839, 2327, 2685, 3065, 6981, 7969, 9195, 11635, 23907, 34905, 39845, 109727, 119535, 329181, 548635, 1426451, 1645905, 4279353, 7132255, 21396765]

約数ペア:

[(1, 21396765), (3, 7132255), (5, 4279353), (13, 1645905), (15, 1426451), (39, 548635), (65, 329181), (179, 119535), (195, 109727), (537, 39845), (613, 34905), (895, 23907), (1839, 11635), (2327, 9195), (2685, 7969), (3065, 6981)]