71297720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:289

約数の個数: 96

約数和(自身を含む): 177876000

約数和(自身を除く): 106578280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 53, 65, 104, 106, 130, 169, 199, 212, 260, 265, 338, 398, 424, 520, 530, 676, 689, 796, 845, 995, 1060, 1352, 1378, 1592, 1690, 1990, 2120, 2587, 2756, 3380, 3445, 3980, 5174, 5512, 6760, 6890, 7960, 8957, 10348, 10547, 12935, 13780, 17914, 20696, 21094, 25870, 27560, 33631, 35828, 42188, 44785, 51740, 52735, 67262, 71656, 84376, 89570, 103480, 105470, 134524, 137111, 168155, 179140, 210940, 269048, 274222, 336310, 358280, 421880, 548444, 672620, 685555, 1096888, 1345240, 1371110, 1782443, 2742220, 3564886, 5484440, 7129772, 8912215, 14259544, 17824430, 35648860, 71297720]

約数ペア:

[(1, 71297720), (2, 35648860), (4, 17824430), (5, 14259544), (8, 8912215), (10, 7129772), (13, 5484440), (20, 3564886), (26, 2742220), (40, 1782443), (52, 1371110), (53, 1345240), (65, 1096888), (104, 685555), (106, 672620), (130, 548444), (169, 421880), (199, 358280), (212, 336310), (260, 274222), (265, 269048), (338, 210940), (398, 179140), (424, 168155), (520, 137111), (530, 134524), (676, 105470), (689, 103480), (796, 89570), (845, 84376), (995, 71656), (1060, 67262), (1352, 52735), (1378, 51740), (1592, 44785), (1690, 42188), (1990, 35828), (2120, 33631), (2587, 27560), (2756, 25870), (3380, 21094), (3445, 20696), (3980, 17914), (5174, 13780), (5512, 12935), (6760, 10547), (6890, 10348), (7960, 8957)]