81390240

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1949}}^1$

素因数の和:1999

約数の個数: 144

約数和(自身を含む): 287469000

約数和(自身を除く): 206078760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 29, 30, 32, 36, 40, 45, 48, 58, 60, 72, 80, 87, 90, 96, 116, 120, 144, 145, 160, 174, 180, 232, 240, 261, 288, 290, 348, 360, 435, 464, 480, 522, 580, 696, 720, 870, 928, 1044, 1160, 1305, 1392, 1440, 1740, 1949, 2088, 2320, 2610, 2784, 3480, 3898, 4176, 4640, 5220, 5847, 6960, 7796, 8352, 9745, 10440, 11694, 13920, 15592, 17541, 19490, 20880, 23388, 29235, 31184, 35082, 38980, 41760, 46776, 56521, 58470, 62368, 70164, 77960, 87705, 93552, 113042, 116940, 140328, 155920, 169563, 175410, 187104, 226084, 233880, 280656, 282605, 311840, 339126, 350820, 452168, 467760, 508689, 561312, 565210, 678252, 701640, 847815, 904336, 935520, 1017378, 1130420, 1356504, 1403280, 1695630, 1808672, 2034756, 2260840, 2543445, 2713008, 2806560, 3391260, 4069512, 4521680, 5086890, 5426016, 6782520, 8139024, 9043360, 10173780, 13565040, 16278048, 20347560, 27130080, 40695120, 81390240]

約数ペア:

[(1, 81390240), (2, 40695120), (3, 27130080), (4, 20347560), (5, 16278048), (6, 13565040), (8, 10173780), (9, 9043360), (10, 8139024), (12, 6782520), (15, 5426016), (16, 5086890), (18, 4521680), (20, 4069512), (24, 3391260), (29, 2806560), (30, 2713008), (32, 2543445), (36, 2260840), (40, 2034756), (45, 1808672), (48, 1695630), (58, 1403280), (60, 1356504), (72, 1130420), (80, 1017378), (87, 935520), (90, 904336), (96, 847815), (116, 701640), (120, 678252), (144, 565210), (145, 561312), (160, 508689), (174, 467760), (180, 452168), (232, 350820), (240, 339126), (261, 311840), (288, 282605), (290, 280656), (348, 233880), (360, 226084), (435, 187104), (464, 175410), (480, 169563), (522, 155920), (580, 140328), (696, 116940), (720, 113042), (870, 93552), (928, 87705), (1044, 77960), (1160, 70164), (1305, 62368), (1392, 58470), (1440, 56521), (1740, 46776), (1949, 41760), (2088, 38980), (2320, 35082), (2610, 31184), (2784, 29235), (3480, 23388), (3898, 20880), (4176, 19490), (4640, 17541), (5220, 15592), (5847, 13920), (6960, 11694), (7796, 10440), (8352, 9745)]