72561640

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{42187}}^1$

素因数の和:42241

約数の個数: 32

約数和(自身を含む): 167064480

約数和(自身を除く): 94502840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 42187, 84374, 168748, 210935, 337496, 421870, 843740, 1687480, 1814041, 3628082, 7256164, 9070205, 14512328, 18140410, 36280820, 72561640]

約数ペア:

[(1, 72561640), (2, 36280820), (4, 18140410), (5, 14512328), (8, 9070205), (10, 7256164), (20, 3628082), (40, 1814041), (43, 1687480), (86, 843740), (172, 421870), (215, 337496), (344, 210935), (430, 168748), (860, 84374), (1720, 42187)]