80561440

素因数分解:

$2^5\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1619}}^1$

素因数の和:1945

約数の個数: 48

約数和(自身を含む): 191056320

約数和(自身を除く): 110494880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 311, 622, 1244, 1555, 1619, 2488, 3110, 3238, 4976, 6220, 6476, 8095, 9952, 12440, 12952, 16190, 24880, 25904, 32380, 49760, 51808, 64760, 129520, 259040, 503509, 1007018, 2014036, 2517545, 4028072, 5035090, 8056144, 10070180, 16112288, 20140360, 40280720, 80561440]

約数ペア:

[(1, 80561440), (2, 40280720), (4, 20140360), (5, 16112288), (8, 10070180), (10, 8056144), (16, 5035090), (20, 4028072), (32, 2517545), (40, 2014036), (80, 1007018), (160, 503509), (311, 259040), (622, 129520), (1244, 64760), (1555, 51808), (1619, 49760), (2488, 32380), (3110, 25904), (3238, 24880), (4976, 16190), (6220, 12952), (6476, 12440), (8095, 9952)]