21540960

素因数分解:

$2^5\times 3^2\times 5^1\times 7^1\times {\mathrm{2137}}^1$

素因数の和:2165

約数の個数: 144

約数和(自身を含む): 84049056

約数和(自身を除く): 62508096

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 96, 105, 112, 120, 126, 140, 144, 160, 168, 180, 210, 224, 240, 252, 280, 288, 315, 336, 360, 420, 480, 504, 560, 630, 672, 720, 840, 1008, 1120, 1260, 1440, 1680, 2016, 2137, 2520, 3360, 4274, 5040, 6411, 8548, 10080, 10685, 12822, 14959, 17096, 19233, 21370, 25644, 29918, 32055, 34192, 38466, 42740, 44877, 51288, 59836, 64110, 68384, 74795, 76932, 85480, 89754, 96165, 102576, 119672, 128220, 134631, 149590, 153864, 170960, 179508, 192330, 205152, 224385, 239344, 256440, 269262, 299180, 307728, 341920, 359016, 384660, 448770, 478688, 512880, 538524, 598360, 615456, 673155, 718032, 769320, 897540, 1025760, 1077048, 1196720, 1346310, 1436064, 1538640, 1795080, 2154096, 2393440, 2692620, 3077280, 3590160, 4308192, 5385240, 7180320, 10770480, 21540960]

約数ペア:

[(1, 21540960), (2, 10770480), (3, 7180320), (4, 5385240), (5, 4308192), (6, 3590160), (7, 3077280), (8, 2692620), (9, 2393440), (10, 2154096), (12, 1795080), (14, 1538640), (15, 1436064), (16, 1346310), (18, 1196720), (20, 1077048), (21, 1025760), (24, 897540), (28, 769320), (30, 718032), (32, 673155), (35, 615456), (36, 598360), (40, 538524), (42, 512880), (45, 478688), (48, 448770), (56, 384660), (60, 359016), (63, 341920), (70, 307728), (72, 299180), (80, 269262), (84, 256440), (90, 239344), (96, 224385), (105, 205152), (112, 192330), (120, 179508), (126, 170960), (140, 153864), (144, 149590), (160, 134631), (168, 128220), (180, 119672), (210, 102576), (224, 96165), (240, 89754), (252, 85480), (280, 76932), (288, 74795), (315, 68384), (336, 64110), (360, 59836), (420, 51288), (480, 44877), (504, 42740), (560, 38466), (630, 34192), (672, 32055), (720, 29918), (840, 25644), (1008, 21370), (1120, 19233), (1260, 17096), (1440, 14959), (1680, 12822), (2016, 10685), (2137, 10080), (2520, 8548), (3360, 6411), (4274, 5040)]