179809780

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1\times {\mathrm{971}}^1$

素因数の和:1224

約数の個数: 48

約数和(自身を含む): 387991296

約数和(自身を除く): 208181516

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 197, 235, 394, 470, 788, 940, 971, 985, 1942, 1970, 3884, 3940, 4855, 9259, 9710, 18518, 19420, 37036, 45637, 46295, 91274, 92590, 182548, 185180, 191287, 228185, 382574, 456370, 765148, 912740, 956435, 1912870, 3825740, 8990489, 17980978, 35961956, 44952445, 89904890, 179809780]

約数ペア:

[(1, 179809780), (2, 89904890), (4, 44952445), (5, 35961956), (10, 17980978), (20, 8990489), (47, 3825740), (94, 1912870), (188, 956435), (197, 912740), (235, 765148), (394, 456370), (470, 382574), (788, 228185), (940, 191287), (971, 185180), (985, 182548), (1942, 92590), (1970, 91274), (3884, 46295), (3940, 45637), (4855, 37036), (9259, 19420), (9710, 18518)]