51291260

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^2\times {\mathrm{73}}^1$

素因数の和:187

約数の個数: 72

約数和(自身を含む): 117668880

約数和(自身を除く): 66377620

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 73, 76, 86, 95, 146, 172, 190, 215, 292, 365, 380, 430, 730, 817, 860, 1387, 1460, 1634, 1849, 2774, 3139, 3268, 3698, 4085, 5548, 6278, 6935, 7396, 8170, 9245, 12556, 13870, 15695, 16340, 18490, 27740, 31390, 35131, 36980, 59641, 62780, 70262, 119282, 134977, 140524, 175655, 238564, 269954, 298205, 351310, 539908, 596410, 674885, 702620, 1192820, 1349770, 2564563, 2699540, 5129126, 10258252, 12822815, 25645630, 51291260]

約数ペア:

[(1, 51291260), (2, 25645630), (4, 12822815), (5, 10258252), (10, 5129126), (19, 2699540), (20, 2564563), (38, 1349770), (43, 1192820), (73, 702620), (76, 674885), (86, 596410), (95, 539908), (146, 351310), (172, 298205), (190, 269954), (215, 238564), (292, 175655), (365, 140524), (380, 134977), (430, 119282), (730, 70262), (817, 62780), (860, 59641), (1387, 36980), (1460, 35131), (1634, 31390), (1849, 27740), (2774, 18490), (3139, 16340), (3268, 15695), (3698, 13870), (4085, 12556), (5548, 9245), (6278, 8170), (6935, 7396)]