1988885600

素因数分解:

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

素因数の和:294

約数の個数: 216

約数和(自身を含む): 5430121200

約数和(自身を除く): 3441235600

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 32, 40, 50, 52, 62, 65, 80, 100, 104, 124, 130, 155, 160, 199, 200, 208, 248, 260, 310, 325, 398, 400, 403, 416, 496, 520, 620, 650, 775, 796, 800, 806, 961, 992, 995, 1040, 1240, 1300, 1550, 1592, 1612, 1922, 1990, 2015, 2080, 2480, 2587, 2600, 3100, 3184, 3224, 3844, 3980, 4030, 4805, 4960, 4975, 5174, 5200, 6169, 6200, 6368, 6448, 7688, 7960, 8060, 9610, 9950, 10075, 10348, 10400, 12338, 12400, 12493, 12896, 12935, 15376, 15920, 16120, 19220, 19900, 20150, 20696, 24025, 24676, 24800, 24986, 25870, 30752, 30845, 31840, 32240, 38440, 39800, 40300, 41392, 48050, 49352, 49972, 51740, 61690, 62465, 64480, 64675, 76880, 79600, 80197, 80600, 82784, 96100, 98704, 99944, 103480, 123380, 124930, 129350, 153760, 154225, 159200, 160394, 161200, 191239, 192200, 197408, 199888, 206960, 246760, 249860, 258700, 308450, 312325, 320788, 322400, 382478, 384400, 399776, 400985, 413920, 493520, 499720, 517400, 616900, 624650, 641576, 764956, 768800, 801970, 956195, 987040, 999440, 1034800, 1233800, 1249300, 1283152, 1529912, 1603940, 1912390, 1998880, 2004925, 2069600, 2467600, 2486107, 2498600, 2566304, 3059824, 3207880, 3824780, 4009850, 4780975, 4935200, 4972214, 4997200, 6119648, 6415760, 7649560, 8019700, 9561950, 9944428, 9994400, 12430535, 12831520, 15299120, 16039400, 19123900, 19888856, 24861070, 30598240, 32078800, 38247800, 39777712, 49722140, 62152675, 64157600, 76495600, 79555424, 99444280, 124305350, 152991200, 198888560, 248610700, 397777120, 497221400, 994442800, 1988885600]

約数ペア:

[(1, 1988885600), (2, 994442800), (4, 497221400), (5, 397777120), (8, 248610700), (10, 198888560), (13, 152991200), (16, 124305350), (20, 99444280), (25, 79555424), (26, 76495600), (31, 64157600), (32, 62152675), (40, 49722140), (50, 39777712), (52, 38247800), (62, 32078800), (65, 30598240), (80, 24861070), (100, 19888856), (104, 19123900), (124, 16039400), (130, 15299120), (155, 12831520), (160, 12430535), (199, 9994400), (200, 9944428), (208, 9561950), (248, 8019700), (260, 7649560), (310, 6415760), (325, 6119648), (398, 4997200), (400, 4972214), (403, 4935200), (416, 4780975), (496, 4009850), (520, 3824780), (620, 3207880), (650, 3059824), (775, 2566304), (796, 2498600), (800, 2486107), (806, 2467600), (961, 2069600), (992, 2004925), (995, 1998880), (1040, 1912390), (1240, 1603940), (1300, 1529912), (1550, 1283152), (1592, 1249300), (1612, 1233800), (1922, 1034800), (1990, 999440), (2015, 987040), (2080, 956195), (2480, 801970), (2587, 768800), (2600, 764956), (3100, 641576), (3184, 624650), (3224, 616900), (3844, 517400), (3980, 499720), (4030, 493520), (4805, 413920), (4960, 400985), (4975, 399776), (5174, 384400), (5200, 382478), (6169, 322400), (6200, 320788), (6368, 312325), (6448, 308450), (7688, 258700), (7960, 249860), (8060, 246760), (9610, 206960), (9950, 199888), (10075, 197408), (10348, 192200), (10400, 191239), (12338, 161200), (12400, 160394), (12493, 159200), (12896, 154225), (12935, 153760), (15376, 129350), (15920, 124930), (16120, 123380), (19220, 103480), (19900, 99944), (20150, 98704), (20696, 96100), (24025, 82784), (24676, 80600), (24800, 80197), (24986, 79600), (25870, 76880), (30752, 64675), (30845, 64480), (31840, 62465), (32240, 61690), (38440, 51740), (39800, 49972), (40300, 49352), (41392, 48050)]