80392720

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{8893}}^1$

素因数の和:9019

約数の個数: 40

約数和(自身を含む): 188588376

約数和(自身を除く): 108195656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2260, 4520, 8893, 9040, 17786, 35572, 44465, 71144, 88930, 142288, 177860, 355720, 711440, 1004909, 2009818, 4019636, 5024545, 8039272, 10049090, 16078544, 20098180, 40196360, 80392720]

約数ペア:

[(1, 80392720), (2, 40196360), (4, 20098180), (5, 16078544), (8, 10049090), (10, 8039272), (16, 5024545), (20, 4019636), (40, 2009818), (80, 1004909), (113, 711440), (226, 355720), (452, 177860), (565, 142288), (904, 88930), (1130, 71144), (1808, 44465), (2260, 35572), (4520, 17786), (8893, 9040)]