639734680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{4787}}^1$

素因数の和:5068

約数の個数: 64

約数和(自身を含む): 1556483040

約数和(自身を除く): 916748360

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 257, 260, 514, 520, 1028, 1285, 2056, 2570, 3341, 4787, 5140, 6682, 9574, 10280, 13364, 16705, 19148, 23935, 26728, 33410, 38296, 47870, 62231, 66820, 95740, 124462, 133640, 191480, 248924, 311155, 497848, 622310, 1230259, 1244620, 2460518, 2489240, 4921036, 6151295, 9842072, 12302590, 15993367, 24605180, 31986734, 49210360, 63973468, 79966835, 127946936, 159933670, 319867340, 639734680]

約数ペア:

[(1, 639734680), (2, 319867340), (4, 159933670), (5, 127946936), (8, 79966835), (10, 63973468), (13, 49210360), (20, 31986734), (26, 24605180), (40, 15993367), (52, 12302590), (65, 9842072), (104, 6151295), (130, 4921036), (257, 2489240), (260, 2460518), (514, 1244620), (520, 1230259), (1028, 622310), (1285, 497848), (2056, 311155), (2570, 248924), (3341, 191480), (4787, 133640), (5140, 124462), (6682, 95740), (9574, 66820), (10280, 62231), (13364, 47870), (16705, 38296), (19148, 33410), (23935, 26728)]