25494680

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:320

約数の個数: 64

約数和(自身を含む): 59719680

約数和(自身を除く): 34225000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 71, 94, 142, 188, 191, 235, 284, 355, 376, 382, 470, 568, 710, 764, 940, 955, 1420, 1528, 1880, 1910, 2840, 3337, 3820, 6674, 7640, 8977, 13348, 13561, 16685, 17954, 26696, 27122, 33370, 35908, 44885, 54244, 66740, 67805, 71816, 89770, 108488, 133480, 135610, 179540, 271220, 359080, 542440, 637367, 1274734, 2549468, 3186835, 5098936, 6373670, 12747340, 25494680]

約数ペア:

[(1, 25494680), (2, 12747340), (4, 6373670), (5, 5098936), (8, 3186835), (10, 2549468), (20, 1274734), (40, 637367), (47, 542440), (71, 359080), (94, 271220), (142, 179540), (188, 135610), (191, 133480), (235, 108488), (284, 89770), (355, 71816), (376, 67805), (382, 66740), (470, 54244), (568, 44885), (710, 35908), (764, 33370), (940, 27122), (955, 26696), (1420, 17954), (1528, 16685), (1880, 13561), (1910, 13348), (2840, 8977), (3337, 7640), (3820, 6674)]