21018960

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{263}}^1$

素因数の和:322

約数の個数: 160

約数和(自身を含む): 74638080

約数和(自身を除く): 53619120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 37, 40, 45, 48, 54, 60, 72, 74, 80, 90, 108, 111, 120, 135, 144, 148, 180, 185, 216, 222, 240, 263, 270, 296, 333, 360, 370, 432, 444, 526, 540, 555, 592, 666, 720, 740, 789, 888, 999, 1052, 1080, 1110, 1315, 1332, 1480, 1578, 1665, 1776, 1998, 2104, 2160, 2220, 2367, 2630, 2664, 2960, 3156, 3330, 3945, 3996, 4208, 4440, 4734, 4995, 5260, 5328, 6312, 6660, 7101, 7890, 7992, 8880, 9468, 9731, 9990, 10520, 11835, 12624, 13320, 14202, 15780, 15984, 18936, 19462, 19980, 21040, 23670, 26640, 28404, 29193, 31560, 35505, 37872, 38924, 39960, 47340, 48655, 56808, 58386, 63120, 71010, 77848, 79920, 87579, 94680, 97310, 113616, 116772, 142020, 145965, 155696, 175158, 189360, 194620, 233544, 262737, 284040, 291930, 350316, 389240, 437895, 467088, 525474, 568080, 583860, 700632, 778480, 875790, 1050948, 1167720, 1313685, 1401264, 1751580, 2101896, 2335440, 2627370, 3503160, 4203792, 5254740, 7006320, 10509480, 21018960]

約数ペア:

[(1, 21018960), (2, 10509480), (3, 7006320), (4, 5254740), (5, 4203792), (6, 3503160), (8, 2627370), (9, 2335440), (10, 2101896), (12, 1751580), (15, 1401264), (16, 1313685), (18, 1167720), (20, 1050948), (24, 875790), (27, 778480), (30, 700632), (36, 583860), (37, 568080), (40, 525474), (45, 467088), (48, 437895), (54, 389240), (60, 350316), (72, 291930), (74, 284040), (80, 262737), (90, 233544), (108, 194620), (111, 189360), (120, 175158), (135, 155696), (144, 145965), (148, 142020), (180, 116772), (185, 113616), (216, 97310), (222, 94680), (240, 87579), (263, 79920), (270, 77848), (296, 71010), (333, 63120), (360, 58386), (370, 56808), (432, 48655), (444, 47340), (526, 39960), (540, 38924), (555, 37872), (592, 35505), (666, 31560), (720, 29193), (740, 28404), (789, 26640), (888, 23670), (999, 21040), (1052, 19980), (1080, 19462), (1110, 18936), (1315, 15984), (1332, 15780), (1480, 14202), (1578, 13320), (1665, 12624), (1776, 11835), (1998, 10520), (2104, 9990), (2160, 9731), (2220, 9468), (2367, 8880), (2630, 7992), (2664, 7890), (2960, 7101), (3156, 6660), (3330, 6312), (3945, 5328), (3996, 5260), (4208, 4995), (4440, 4734)]