278869941

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{1777}}^1$

素因数の和:1890

約数の個数: 48

約数和(自身を含む): 479291904

約数和(自身を除く): 200421963

約数列:

[1, 3, 7, 9, 21, 47, 53, 63, 141, 159, 329, 371, 423, 477, 987, 1113, 1777, 2491, 2961, 3339, 5331, 7473, 12439, 15993, 17437, 22419, 37317, 52311, 83519, 94181, 111951, 156933, 250557, 282543, 584633, 659267, 751671, 847629, 1753899, 1977801, 4426507, 5261697, 5933403, 13279521, 30985549, 39838563, 92956647, 278869941]

約数ペア:

[(1, 278869941), (3, 92956647), (7, 39838563), (9, 30985549), (21, 13279521), (47, 5933403), (53, 5261697), (63, 4426507), (141, 1977801), (159, 1753899), (329, 847629), (371, 751671), (423, 659267), (477, 584633), (987, 282543), (1113, 250557), (1777, 156933), (2491, 111951), (2961, 94181), (3339, 83519), (5331, 52311), (7473, 37317), (12439, 22419), (15993, 17437)]