21858120

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{547}}^1$

素因数の和:604

約数の個数: 128

約数和(自身を含む): 74966400

約数和(自身を除く): 53108280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 37, 40, 45, 54, 60, 72, 74, 90, 108, 111, 120, 135, 148, 180, 185, 216, 222, 270, 296, 333, 360, 370, 444, 540, 547, 555, 666, 740, 888, 999, 1080, 1094, 1110, 1332, 1480, 1641, 1665, 1998, 2188, 2220, 2664, 2735, 3282, 3330, 3996, 4376, 4440, 4923, 4995, 5470, 6564, 6660, 7992, 8205, 9846, 9990, 10940, 13128, 13320, 14769, 16410, 19692, 19980, 20239, 21880, 24615, 29538, 32820, 39384, 39960, 40478, 49230, 59076, 60717, 65640, 73845, 80956, 98460, 101195, 118152, 121434, 147690, 161912, 182151, 196920, 202390, 242868, 295380, 303585, 364302, 404780, 485736, 546453, 590760, 607170, 728604, 809560, 910755, 1092906, 1214340, 1457208, 1821510, 2185812, 2428680, 2732265, 3643020, 4371624, 5464530, 7286040, 10929060, 21858120]

約数ペア:

[(1, 21858120), (2, 10929060), (3, 7286040), (4, 5464530), (5, 4371624), (6, 3643020), (8, 2732265), (9, 2428680), (10, 2185812), (12, 1821510), (15, 1457208), (18, 1214340), (20, 1092906), (24, 910755), (27, 809560), (30, 728604), (36, 607170), (37, 590760), (40, 546453), (45, 485736), (54, 404780), (60, 364302), (72, 303585), (74, 295380), (90, 242868), (108, 202390), (111, 196920), (120, 182151), (135, 161912), (148, 147690), (180, 121434), (185, 118152), (216, 101195), (222, 98460), (270, 80956), (296, 73845), (333, 65640), (360, 60717), (370, 59076), (444, 49230), (540, 40478), (547, 39960), (555, 39384), (666, 32820), (740, 29538), (888, 24615), (999, 21880), (1080, 20239), (1094, 19980), (1110, 19692), (1332, 16410), (1480, 14769), (1641, 13320), (1665, 13128), (1998, 10940), (2188, 9990), (2220, 9846), (2664, 8205), (2735, 7992), (3282, 6660), (3330, 6564), (3996, 5470), (4376, 4995), (4440, 4923)]