21609480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:239

約数の個数: 128

約数和(自身を含む): 69166080

約数和(自身を除く): 47556600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 37, 40, 60, 62, 74, 93, 111, 120, 124, 148, 155, 157, 185, 186, 222, 248, 296, 310, 314, 370, 372, 444, 465, 471, 555, 620, 628, 740, 744, 785, 888, 930, 942, 1110, 1147, 1240, 1256, 1480, 1570, 1860, 1884, 2220, 2294, 2355, 3140, 3441, 3720, 3768, 4440, 4588, 4710, 4867, 5735, 5809, 6280, 6882, 9176, 9420, 9734, 11470, 11618, 13764, 14601, 17205, 17427, 18840, 19468, 22940, 23236, 24335, 27528, 29045, 29202, 34410, 34854, 38936, 45880, 46472, 48670, 58090, 58404, 68820, 69708, 73005, 87135, 97340, 116180, 116808, 137640, 139416, 146010, 174270, 180079, 194680, 232360, 292020, 348540, 360158, 540237, 584040, 697080, 720316, 900395, 1080474, 1440632, 1800790, 2160948, 2701185, 3601580, 4321896, 5402370, 7203160, 10804740, 21609480]

約数ペア:

[(1, 21609480), (2, 10804740), (3, 7203160), (4, 5402370), (5, 4321896), (6, 3601580), (8, 2701185), (10, 2160948), (12, 1800790), (15, 1440632), (20, 1080474), (24, 900395), (30, 720316), (31, 697080), (37, 584040), (40, 540237), (60, 360158), (62, 348540), (74, 292020), (93, 232360), (111, 194680), (120, 180079), (124, 174270), (148, 146010), (155, 139416), (157, 137640), (185, 116808), (186, 116180), (222, 97340), (248, 87135), (296, 73005), (310, 69708), (314, 68820), (370, 58404), (372, 58090), (444, 48670), (465, 46472), (471, 45880), (555, 38936), (620, 34854), (628, 34410), (740, 29202), (744, 29045), (785, 27528), (888, 24335), (930, 23236), (942, 22940), (1110, 19468), (1147, 18840), (1240, 17427), (1256, 17205), (1480, 14601), (1570, 13764), (1860, 11618), (1884, 11470), (2220, 9734), (2294, 9420), (2355, 9176), (3140, 6882), (3441, 6280), (3720, 5809), (3768, 5735), (4440, 4867), (4588, 4710)]