21728072

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{761}}^1$

素因数の和:893

約数の個数: 32

約数和(自身を含む): 42245280

約数和(自身を除く): 20517208

約数列:

[1, 2, 4, 8, 43, 83, 86, 166, 172, 332, 344, 664, 761, 1522, 3044, 3569, 6088, 7138, 14276, 28552, 32723, 63163, 65446, 126326, 130892, 252652, 261784, 505304, 2716009, 5432018, 10864036, 21728072]

約数ペア:

[(1, 21728072), (2, 10864036), (4, 5432018), (8, 2716009), (43, 505304), (83, 261784), (86, 252652), (166, 130892), (172, 126326), (332, 65446), (344, 63163), (664, 32723), (761, 28552), (1522, 14276), (3044, 7138), (3569, 6088)]