20503905

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{383}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 34062336

約数和(自身を除く): 13558431

約数列:

[1, 3, 5, 15, 43, 83, 129, 215, 249, 383, 415, 645, 1149, 1245, 1915, 3569, 5745, 10707, 16469, 17845, 31789, 49407, 53535, 82345, 95367, 158945, 247035, 476835, 1366927, 4100781, 6834635, 20503905]

約数ペア:

[(1, 20503905), (3, 6834635), (5, 4100781), (15, 1366927), (43, 476835), (83, 247035), (129, 158945), (215, 95367), (249, 82345), (383, 53535), (415, 49407), (645, 31789), (1149, 17845), (1245, 16469), (1915, 10707), (3569, 5745)]