21948080

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{509}}^1$

素因数の和:547

約数の個数: 120

約数和(自身を含む): 64884240

約数和(自身を除く): 42936160

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 80, 88, 98, 110, 112, 140, 154, 176, 196, 220, 245, 280, 308, 385, 392, 440, 490, 509, 539, 560, 616, 770, 784, 880, 980, 1018, 1078, 1232, 1540, 1960, 2036, 2156, 2545, 2695, 3080, 3563, 3920, 4072, 4312, 5090, 5390, 5599, 6160, 7126, 8144, 8624, 10180, 10780, 11198, 14252, 17815, 20360, 21560, 22396, 24941, 27995, 28504, 35630, 39193, 40720, 43120, 44792, 49882, 55990, 57008, 71260, 78386, 89584, 99764, 111980, 124705, 142520, 156772, 195965, 199528, 223960, 249410, 274351, 285040, 313544, 391930, 399056, 447920, 498820, 548702, 627088, 783860, 997640, 1097404, 1371755, 1567720, 1995280, 2194808, 2743510, 3135440, 4389616, 5487020, 10974040, 21948080]

約数ペア:

[(1, 21948080), (2, 10974040), (4, 5487020), (5, 4389616), (7, 3135440), (8, 2743510), (10, 2194808), (11, 1995280), (14, 1567720), (16, 1371755), (20, 1097404), (22, 997640), (28, 783860), (35, 627088), (40, 548702), (44, 498820), (49, 447920), (55, 399056), (56, 391930), (70, 313544), (77, 285040), (80, 274351), (88, 249410), (98, 223960), (110, 199528), (112, 195965), (140, 156772), (154, 142520), (176, 124705), (196, 111980), (220, 99764), (245, 89584), (280, 78386), (308, 71260), (385, 57008), (392, 55990), (440, 49882), (490, 44792), (509, 43120), (539, 40720), (560, 39193), (616, 35630), (770, 28504), (784, 27995), (880, 24941), (980, 22396), (1018, 21560), (1078, 20360), (1232, 17815), (1540, 14252), (1960, 11198), (2036, 10780), (2156, 10180), (2545, 8624), (2695, 8144), (3080, 7126), (3563, 6160), (3920, 5599), (4072, 5390), (4312, 5090)]