127797800

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{199}}^1$

素因数の和:260

約数の個数: 144

約数和(自身を含む): 340380000

約数和(自身を除く): 212582200

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 25, 26, 38, 40, 50, 52, 65, 76, 95, 100, 104, 130, 152, 169, 190, 199, 200, 247, 260, 325, 338, 380, 398, 475, 494, 520, 650, 676, 760, 796, 845, 950, 988, 995, 1235, 1300, 1352, 1592, 1690, 1900, 1976, 1990, 2470, 2587, 2600, 3211, 3380, 3781, 3800, 3980, 4225, 4940, 4975, 5174, 6175, 6422, 6760, 7562, 7960, 8450, 9880, 9950, 10348, 12350, 12844, 12935, 15124, 16055, 16900, 18905, 19900, 20696, 24700, 25688, 25870, 30248, 32110, 33631, 33800, 37810, 39800, 49153, 49400, 51740, 64220, 64675, 67262, 75620, 80275, 94525, 98306, 103480, 128440, 129350, 134524, 151240, 160550, 168155, 189050, 196612, 245765, 258700, 269048, 321100, 336310, 378100, 393224, 491530, 517400, 638989, 642200, 672620, 756200, 840775, 983060, 1228825, 1277978, 1345240, 1681550, 1966120, 2457650, 2555956, 3194945, 3363100, 4915300, 5111912, 6389890, 6726200, 9830600, 12779780, 15974725, 25559560, 31949450, 63898900, 127797800]

約数ペア:

[(1, 127797800), (2, 63898900), (4, 31949450), (5, 25559560), (8, 15974725), (10, 12779780), (13, 9830600), (19, 6726200), (20, 6389890), (25, 5111912), (26, 4915300), (38, 3363100), (40, 3194945), (50, 2555956), (52, 2457650), (65, 1966120), (76, 1681550), (95, 1345240), (100, 1277978), (104, 1228825), (130, 983060), (152, 840775), (169, 756200), (190, 672620), (199, 642200), (200, 638989), (247, 517400), (260, 491530), (325, 393224), (338, 378100), (380, 336310), (398, 321100), (475, 269048), (494, 258700), (520, 245765), (650, 196612), (676, 189050), (760, 168155), (796, 160550), (845, 151240), (950, 134524), (988, 129350), (995, 128440), (1235, 103480), (1300, 98306), (1352, 94525), (1592, 80275), (1690, 75620), (1900, 67262), (1976, 64675), (1990, 64220), (2470, 51740), (2587, 49400), (2600, 49153), (3211, 39800), (3380, 37810), (3781, 33800), (3800, 33631), (3980, 32110), (4225, 30248), (4940, 25870), (4975, 25688), (5174, 24700), (6175, 20696), (6422, 19900), (6760, 18905), (7562, 16900), (7960, 16055), (8450, 15124), (9880, 12935), (9950, 12844), (10348, 12350)]