20785690

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{317}}^1$

素因数の和:486

約数の個数: 32

約数和(自身を含む): 38465280

約数和(自身を除く): 17679590

約数列:

[1, 2, 5, 10, 79, 83, 158, 166, 317, 395, 415, 634, 790, 830, 1585, 3170, 6557, 13114, 25043, 26311, 32785, 50086, 52622, 65570, 125215, 131555, 250430, 263110, 2078569, 4157138, 10392845, 20785690]

約数ペア:

[(1, 20785690), (2, 10392845), (5, 4157138), (10, 2078569), (79, 263110), (83, 250430), (158, 131555), (166, 125215), (317, 65570), (395, 52622), (415, 50086), (634, 32785), (790, 26311), (830, 25043), (1585, 13114), (3170, 6557)]