81254520

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:270

約数の個数: 192

約数和(自身を含む): 281080800

約数和(自身を除く): 199826280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 29, 30, 36, 40, 43, 45, 58, 60, 72, 86, 87, 90, 116, 120, 129, 145, 172, 174, 180, 181, 215, 232, 258, 261, 290, 344, 348, 360, 362, 387, 430, 435, 516, 522, 543, 580, 645, 696, 724, 774, 860, 870, 905, 1032, 1044, 1086, 1160, 1247, 1290, 1305, 1448, 1548, 1629, 1720, 1740, 1810, 1935, 2088, 2172, 2494, 2580, 2610, 2715, 3096, 3258, 3480, 3620, 3741, 3870, 4344, 4988, 5160, 5220, 5249, 5430, 6235, 6516, 7240, 7482, 7740, 7783, 8145, 9976, 10440, 10498, 10860, 11223, 12470, 13032, 14964, 15480, 15566, 15747, 16290, 18705, 20996, 21720, 22446, 23349, 24940, 26245, 29928, 31132, 31494, 32580, 37410, 38915, 41992, 44892, 46698, 47241, 49880, 52490, 56115, 62264, 62988, 65160, 70047, 74820, 77830, 78735, 89784, 93396, 94482, 104980, 112230, 116745, 125976, 140094, 149640, 155660, 157470, 186792, 188964, 209960, 224460, 225707, 233490, 236205, 280188, 311320, 314940, 350235, 377928, 448920, 451414, 466980, 472410, 560376, 629880, 677121, 700470, 902828, 933960, 944820, 1128535, 1354242, 1400940, 1805656, 1889640, 2031363, 2257070, 2708484, 2801880, 3385605, 4062726, 4514140, 5416968, 6771210, 8125452, 9028280, 10156815, 13542420, 16250904, 20313630, 27084840, 40627260, 81254520]

約数ペア:

[(1, 81254520), (2, 40627260), (3, 27084840), (4, 20313630), (5, 16250904), (6, 13542420), (8, 10156815), (9, 9028280), (10, 8125452), (12, 6771210), (15, 5416968), (18, 4514140), (20, 4062726), (24, 3385605), (29, 2801880), (30, 2708484), (36, 2257070), (40, 2031363), (43, 1889640), (45, 1805656), (58, 1400940), (60, 1354242), (72, 1128535), (86, 944820), (87, 933960), (90, 902828), (116, 700470), (120, 677121), (129, 629880), (145, 560376), (172, 472410), (174, 466980), (180, 451414), (181, 448920), (215, 377928), (232, 350235), (258, 314940), (261, 311320), (290, 280188), (344, 236205), (348, 233490), (360, 225707), (362, 224460), (387, 209960), (430, 188964), (435, 186792), (516, 157470), (522, 155660), (543, 149640), (580, 140094), (645, 125976), (696, 116745), (724, 112230), (774, 104980), (860, 94482), (870, 93396), (905, 89784), (1032, 78735), (1044, 77830), (1086, 74820), (1160, 70047), (1247, 65160), (1290, 62988), (1305, 62264), (1448, 56115), (1548, 52490), (1629, 49880), (1720, 47241), (1740, 46698), (1810, 44892), (1935, 41992), (2088, 38915), (2172, 37410), (2494, 32580), (2580, 31494), (2610, 31132), (2715, 29928), (3096, 26245), (3258, 24940), (3480, 23349), (3620, 22446), (3741, 21720), (3870, 20996), (4344, 18705), (4988, 16290), (5160, 15747), (5220, 15566), (5249, 15480), (5430, 14964), (6235, 13032), (6516, 12470), (7240, 11223), (7482, 10860), (7740, 10498), (7783, 10440), (8145, 9976)]