81025520

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{8963}}^1$

素因数の和:9089

約数の個数: 40

約数和(自身を含む): 190072656

約数和(自身を除く): 109047136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2260, 4520, 8963, 9040, 17926, 35852, 44815, 71704, 89630, 143408, 179260, 358520, 717040, 1012819, 2025638, 4051276, 5064095, 8102552, 10128190, 16205104, 20256380, 40512760, 81025520]

約数ペア:

[(1, 81025520), (2, 40512760), (4, 20256380), (5, 16205104), (8, 10128190), (10, 8102552), (16, 5064095), (20, 4051276), (40, 2025638), (80, 1012819), (113, 717040), (226, 358520), (452, 179260), (565, 143408), (904, 89630), (1130, 71704), (1808, 44815), (2260, 35852), (4520, 17926), (8963, 9040)]