21993120

素因数分解:

$2^5\times 3^4\times 5^1\times {\mathrm{1697}}^1$

素因数の和:1724

約数の個数: 120

約数和(自身を含む): 77663124

約数和(自身を除く): 55670004

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, 72, 80, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 216, 240, 270, 288, 324, 360, 405, 432, 480, 540, 648, 720, 810, 864, 1080, 1296, 1440, 1620, 1697, 2160, 2592, 3240, 3394, 4320, 5091, 6480, 6788, 8485, 10182, 12960, 13576, 15273, 16970, 20364, 25455, 27152, 30546, 33940, 40728, 45819, 50910, 54304, 61092, 67880, 76365, 81456, 91638, 101820, 122184, 135760, 137457, 152730, 162912, 183276, 203640, 229095, 244368, 271520, 274914, 305460, 366552, 407280, 458190, 488736, 549828, 610920, 687285, 733104, 814560, 916380, 1099656, 1221840, 1374570, 1466208, 1832760, 2199312, 2443680, 2749140, 3665520, 4398624, 5498280, 7331040, 10996560, 21993120]

約数ペア:

[(1, 21993120), (2, 10996560), (3, 7331040), (4, 5498280), (5, 4398624), (6, 3665520), (8, 2749140), (9, 2443680), (10, 2199312), (12, 1832760), (15, 1466208), (16, 1374570), (18, 1221840), (20, 1099656), (24, 916380), (27, 814560), (30, 733104), (32, 687285), (36, 610920), (40, 549828), (45, 488736), (48, 458190), (54, 407280), (60, 366552), (72, 305460), (80, 274914), (81, 271520), (90, 244368), (96, 229095), (108, 203640), (120, 183276), (135, 162912), (144, 152730), (160, 137457), (162, 135760), (180, 122184), (216, 101820), (240, 91638), (270, 81456), (288, 76365), (324, 67880), (360, 61092), (405, 54304), (432, 50910), (480, 45819), (540, 40728), (648, 33940), (720, 30546), (810, 27152), (864, 25455), (1080, 20364), (1296, 16970), (1440, 15273), (1620, 13576), (1697, 12960), (2160, 10182), (2592, 8485), (3240, 6788), (3394, 6480), (4320, 5091)]