20290480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1907}}^1$

素因数の和:1946

約数の個数: 80

約数和(自身を含む): 56782080

約数和(自身を除く): 36491600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 56, 70, 76, 80, 95, 112, 133, 140, 152, 190, 266, 280, 304, 380, 532, 560, 665, 760, 1064, 1330, 1520, 1907, 2128, 2660, 3814, 5320, 7628, 9535, 10640, 13349, 15256, 19070, 26698, 30512, 36233, 38140, 53396, 66745, 72466, 76280, 106792, 133490, 144932, 152560, 181165, 213584, 253631, 266980, 289864, 362330, 507262, 533960, 579728, 724660, 1014524, 1067920, 1268155, 1449320, 2029048, 2536310, 2898640, 4058096, 5072620, 10145240, 20290480]

約数ペア:

[(1, 20290480), (2, 10145240), (4, 5072620), (5, 4058096), (7, 2898640), (8, 2536310), (10, 2029048), (14, 1449320), (16, 1268155), (19, 1067920), (20, 1014524), (28, 724660), (35, 579728), (38, 533960), (40, 507262), (56, 362330), (70, 289864), (76, 266980), (80, 253631), (95, 213584), (112, 181165), (133, 152560), (140, 144932), (152, 133490), (190, 106792), (266, 76280), (280, 72466), (304, 66745), (380, 53396), (532, 38140), (560, 36233), (665, 30512), (760, 26698), (1064, 19070), (1330, 15256), (1520, 13349), (1907, 10640), (2128, 9535), (2660, 7628), (3814, 5320)]