17997005

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:245

約数の個数: 32

約数和(自身を含む): 24482304

約数和(自身を除く): 6485299

約数列:

[1, 5, 13, 43, 47, 65, 137, 215, 235, 559, 611, 685, 1781, 2021, 2795, 3055, 5891, 6439, 8905, 10105, 26273, 29455, 32195, 76583, 83707, 131365, 276877, 382915, 418535, 1384385, 3599401, 17997005]

約数ペア:

[(1, 17997005), (5, 3599401), (13, 1384385), (43, 418535), (47, 382915), (65, 276877), (137, 131365), (215, 83707), (235, 76583), (559, 32195), (611, 29455), (685, 26273), (1781, 10105), (2021, 8905), (2795, 6439), (3055, 5891)]