18923960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1049}}^1$

素因数の和:1112

約数の個数: 64

約数和(自身を含む): 47628000

約数和(自身を除く): 28704040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 110, 164, 205, 220, 328, 410, 440, 451, 820, 902, 1049, 1640, 1804, 2098, 2255, 3608, 4196, 4510, 5245, 8392, 9020, 10490, 11539, 18040, 20980, 23078, 41960, 43009, 46156, 57695, 86018, 92312, 115390, 172036, 215045, 230780, 344072, 430090, 461560, 473099, 860180, 946198, 1720360, 1892396, 2365495, 3784792, 4730990, 9461980, 18923960]

約数ペア:

[(1, 18923960), (2, 9461980), (4, 4730990), (5, 3784792), (8, 2365495), (10, 1892396), (11, 1720360), (20, 946198), (22, 860180), (40, 473099), (41, 461560), (44, 430090), (55, 344072), (82, 230780), (88, 215045), (110, 172036), (164, 115390), (205, 92312), (220, 86018), (328, 57695), (410, 46156), (440, 43009), (451, 41960), (820, 23078), (902, 20980), (1049, 18040), (1640, 11539), (1804, 10490), (2098, 9020), (2255, 8392), (3608, 5245), (4196, 4510)]