21781440

素因数分解:

$2^6\times 3^3\times 5^1\times {\mathrm{2521}}^1$

素因数の和:2547

約数の個数: 112

約数和(自身を含む): 76870560

約数和(自身を除く): 55089120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 135, 144, 160, 180, 192, 216, 240, 270, 288, 320, 360, 432, 480, 540, 576, 720, 864, 960, 1080, 1440, 1728, 2160, 2521, 2880, 4320, 5042, 7563, 8640, 10084, 12605, 15126, 20168, 22689, 25210, 30252, 37815, 40336, 45378, 50420, 60504, 68067, 75630, 80672, 90756, 100840, 113445, 121008, 136134, 151260, 161344, 181512, 201680, 226890, 242016, 272268, 302520, 340335, 363024, 403360, 453780, 484032, 544536, 605040, 680670, 726048, 806720, 907560, 1089072, 1210080, 1361340, 1452096, 1815120, 2178144, 2420160, 2722680, 3630240, 4356288, 5445360, 7260480, 10890720, 21781440]

約数ペア:

[(1, 21781440), (2, 10890720), (3, 7260480), (4, 5445360), (5, 4356288), (6, 3630240), (8, 2722680), (9, 2420160), (10, 2178144), (12, 1815120), (15, 1452096), (16, 1361340), (18, 1210080), (20, 1089072), (24, 907560), (27, 806720), (30, 726048), (32, 680670), (36, 605040), (40, 544536), (45, 484032), (48, 453780), (54, 403360), (60, 363024), (64, 340335), (72, 302520), (80, 272268), (90, 242016), (96, 226890), (108, 201680), (120, 181512), (135, 161344), (144, 151260), (160, 136134), (180, 121008), (192, 113445), (216, 100840), (240, 90756), (270, 80672), (288, 75630), (320, 68067), (360, 60504), (432, 50420), (480, 45378), (540, 40336), (576, 37815), (720, 30252), (864, 25210), (960, 22689), (1080, 20168), (1440, 15126), (1728, 12605), (2160, 10084), (2521, 8640), (2880, 7563), (4320, 5042)]