2690780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 6091680

約数和(自身を除く): 3400900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 73, 76, 95, 97, 146, 190, 194, 292, 365, 380, 388, 485, 730, 970, 1387, 1460, 1843, 1940, 2774, 3686, 5548, 6935, 7081, 7372, 9215, 13870, 14162, 18430, 27740, 28324, 35405, 36860, 70810, 134539, 141620, 269078, 538156, 672695, 1345390, 2690780]

約数ペア:

[(1, 2690780), (2, 1345390), (4, 672695), (5, 538156), (10, 269078), (19, 141620), (20, 134539), (38, 70810), (73, 36860), (76, 35405), (95, 28324), (97, 27740), (146, 18430), (190, 14162), (194, 13870), (292, 9215), (365, 7372), (380, 7081), (388, 6935), (485, 5548), (730, 3686), (970, 2774), (1387, 1940), (1460, 1843)]