81161920

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{1907}}^1$

素因数の和:1950

約数の個数: 112

約数和(自身を含む): 232623360

約数和(自身を除く): 151461440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 32, 35, 38, 40, 56, 64, 70, 76, 80, 95, 112, 133, 140, 152, 160, 190, 224, 266, 280, 304, 320, 380, 448, 532, 560, 608, 665, 760, 1064, 1120, 1216, 1330, 1520, 1907, 2128, 2240, 2660, 3040, 3814, 4256, 5320, 6080, 7628, 8512, 9535, 10640, 13349, 15256, 19070, 21280, 26698, 30512, 36233, 38140, 42560, 53396, 61024, 66745, 72466, 76280, 106792, 122048, 133490, 144932, 152560, 181165, 213584, 253631, 266980, 289864, 305120, 362330, 427168, 507262, 533960, 579728, 610240, 724660, 854336, 1014524, 1067920, 1159456, 1268155, 1449320, 2029048, 2135840, 2318912, 2536310, 2898640, 4058096, 4271680, 5072620, 5797280, 8116192, 10145240, 11594560, 16232384, 20290480, 40580960, 81161920]

約数ペア:

[(1, 81161920), (2, 40580960), (4, 20290480), (5, 16232384), (7, 11594560), (8, 10145240), (10, 8116192), (14, 5797280), (16, 5072620), (19, 4271680), (20, 4058096), (28, 2898640), (32, 2536310), (35, 2318912), (38, 2135840), (40, 2029048), (56, 1449320), (64, 1268155), (70, 1159456), (76, 1067920), (80, 1014524), (95, 854336), (112, 724660), (133, 610240), (140, 579728), (152, 533960), (160, 507262), (190, 427168), (224, 362330), (266, 305120), (280, 289864), (304, 266980), (320, 253631), (380, 213584), (448, 181165), (532, 152560), (560, 144932), (608, 133490), (665, 122048), (760, 106792), (1064, 76280), (1120, 72466), (1216, 66745), (1330, 61024), (1520, 53396), (1907, 42560), (2128, 38140), (2240, 36233), (2660, 30512), (3040, 26698), (3814, 21280), (4256, 19070), (5320, 15256), (6080, 13349), (7628, 10640), (8512, 9535)]