21600720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1579}}^1$

素因数の和:1617

約数の個数: 120

約数和(自身を含む): 76408800

約数和(自身を除く): 54808080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 36, 38, 40, 45, 48, 57, 60, 72, 76, 80, 90, 95, 114, 120, 144, 152, 171, 180, 190, 228, 240, 285, 304, 342, 360, 380, 456, 570, 684, 720, 760, 855, 912, 1140, 1368, 1520, 1579, 1710, 2280, 2736, 3158, 3420, 4560, 4737, 6316, 6840, 7895, 9474, 12632, 13680, 14211, 15790, 18948, 23685, 25264, 28422, 30001, 31580, 37896, 47370, 56844, 60002, 63160, 71055, 75792, 90003, 94740, 113688, 120004, 126320, 142110, 150005, 180006, 189480, 227376, 240008, 270009, 284220, 300010, 360012, 378960, 450015, 480016, 540018, 568440, 600020, 720024, 900030, 1080036, 1136880, 1200040, 1350045, 1440048, 1800060, 2160072, 2400080, 2700090, 3600120, 4320144, 5400180, 7200240, 10800360, 21600720]

約数ペア:

[(1, 21600720), (2, 10800360), (3, 7200240), (4, 5400180), (5, 4320144), (6, 3600120), (8, 2700090), (9, 2400080), (10, 2160072), (12, 1800060), (15, 1440048), (16, 1350045), (18, 1200040), (19, 1136880), (20, 1080036), (24, 900030), (30, 720024), (36, 600020), (38, 568440), (40, 540018), (45, 480016), (48, 450015), (57, 378960), (60, 360012), (72, 300010), (76, 284220), (80, 270009), (90, 240008), (95, 227376), (114, 189480), (120, 180006), (144, 150005), (152, 142110), (171, 126320), (180, 120004), (190, 113688), (228, 94740), (240, 90003), (285, 75792), (304, 71055), (342, 63160), (360, 60002), (380, 56844), (456, 47370), (570, 37896), (684, 31580), (720, 30001), (760, 28422), (855, 25264), (912, 23685), (1140, 18948), (1368, 15790), (1520, 14211), (1579, 13680), (1710, 12632), (2280, 9474), (2736, 7895), (3158, 6840), (3420, 6316), (4560, 4737)]