397777120

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{199}}^1$

素因数の和:289

約数の個数: 144

約数和(自身を含む): 1050991200

約数和(自身を除く): 653214080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 65, 80, 104, 124, 130, 155, 160, 199, 208, 248, 260, 310, 398, 403, 416, 496, 520, 620, 796, 806, 961, 992, 995, 1040, 1240, 1592, 1612, 1922, 1990, 2015, 2080, 2480, 2587, 3184, 3224, 3844, 3980, 4030, 4805, 4960, 5174, 6169, 6368, 6448, 7688, 7960, 8060, 9610, 10348, 12338, 12493, 12896, 12935, 15376, 15920, 16120, 19220, 20696, 24676, 24986, 25870, 30752, 30845, 31840, 32240, 38440, 41392, 49352, 49972, 51740, 61690, 62465, 64480, 76880, 80197, 82784, 98704, 99944, 103480, 123380, 124930, 153760, 160394, 191239, 197408, 199888, 206960, 246760, 249860, 320788, 382478, 399776, 400985, 413920, 493520, 499720, 641576, 764956, 801970, 956195, 987040, 999440, 1283152, 1529912, 1603940, 1912390, 1998880, 2486107, 2566304, 3059824, 3207880, 3824780, 4972214, 6119648, 6415760, 7649560, 9944428, 12430535, 12831520, 15299120, 19888856, 24861070, 30598240, 39777712, 49722140, 79555424, 99444280, 198888560, 397777120]

約数ペア:

[(1, 397777120), (2, 198888560), (4, 99444280), (5, 79555424), (8, 49722140), (10, 39777712), (13, 30598240), (16, 24861070), (20, 19888856), (26, 15299120), (31, 12831520), (32, 12430535), (40, 9944428), (52, 7649560), (62, 6415760), (65, 6119648), (80, 4972214), (104, 3824780), (124, 3207880), (130, 3059824), (155, 2566304), (160, 2486107), (199, 1998880), (208, 1912390), (248, 1603940), (260, 1529912), (310, 1283152), (398, 999440), (403, 987040), (416, 956195), (496, 801970), (520, 764956), (620, 641576), (796, 499720), (806, 493520), (961, 413920), (992, 400985), (995, 399776), (1040, 382478), (1240, 320788), (1592, 249860), (1612, 246760), (1922, 206960), (1990, 199888), (2015, 197408), (2080, 191239), (2480, 160394), (2587, 153760), (3184, 124930), (3224, 123380), (3844, 103480), (3980, 99944), (4030, 98704), (4805, 82784), (4960, 80197), (5174, 76880), (6169, 64480), (6368, 62465), (6448, 61690), (7688, 51740), (7960, 49972), (8060, 49352), (9610, 41392), (10348, 38440), (12338, 32240), (12493, 31840), (12896, 30845), (12935, 30752), (15376, 25870), (15920, 24986), (16120, 24676), (19220, 20696)]