20178950

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1931}}^1$

素因数の和:1973

約数の個数: 48

約数和(自身を含む): 43122240

約数和(自身を除く): 22943290

約数列:

[1, 2, 5, 10, 11, 19, 22, 25, 38, 50, 55, 95, 110, 190, 209, 275, 418, 475, 550, 950, 1045, 1931, 2090, 3862, 5225, 9655, 10450, 19310, 21241, 36689, 42482, 48275, 73378, 96550, 106205, 183445, 212410, 366890, 403579, 531025, 807158, 917225, 1062050, 1834450, 2017895, 4035790, 10089475, 20178950]

約数ペア:

[(1, 20178950), (2, 10089475), (5, 4035790), (10, 2017895), (11, 1834450), (19, 1062050), (22, 917225), (25, 807158), (38, 531025), (50, 403579), (55, 366890), (95, 212410), (110, 183445), (190, 106205), (209, 96550), (275, 73378), (418, 48275), (475, 42482), (550, 36689), (950, 21241), (1045, 19310), (1931, 10450), (2090, 9655), (3862, 5225)]