20198080

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{127}}^1$

素因数の和:222

約数の個数: 112

約数和(自身を含む): 56180736

約数和(自身を除く): 35982656

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 71, 80, 112, 127, 140, 142, 160, 224, 254, 280, 284, 320, 355, 448, 497, 508, 560, 568, 635, 710, 889, 994, 1016, 1120, 1136, 1270, 1420, 1778, 1988, 2032, 2240, 2272, 2485, 2540, 2840, 3556, 3976, 4064, 4445, 4544, 4970, 5080, 5680, 7112, 7952, 8128, 8890, 9017, 9940, 10160, 11360, 14224, 15904, 17780, 18034, 19880, 20320, 22720, 28448, 31808, 35560, 36068, 39760, 40640, 45085, 56896, 63119, 71120, 72136, 79520, 90170, 126238, 142240, 144272, 159040, 180340, 252476, 284480, 288544, 315595, 360680, 504952, 577088, 631190, 721360, 1009904, 1262380, 1442720, 2019808, 2524760, 2885440, 4039616, 5049520, 10099040, 20198080]

約数ペア:

[(1, 20198080), (2, 10099040), (4, 5049520), (5, 4039616), (7, 2885440), (8, 2524760), (10, 2019808), (14, 1442720), (16, 1262380), (20, 1009904), (28, 721360), (32, 631190), (35, 577088), (40, 504952), (56, 360680), (64, 315595), (70, 288544), (71, 284480), (80, 252476), (112, 180340), (127, 159040), (140, 144272), (142, 142240), (160, 126238), (224, 90170), (254, 79520), (280, 72136), (284, 71120), (320, 63119), (355, 56896), (448, 45085), (497, 40640), (508, 39760), (560, 36068), (568, 35560), (635, 31808), (710, 28448), (889, 22720), (994, 20320), (1016, 19880), (1120, 18034), (1136, 17780), (1270, 15904), (1420, 14224), (1778, 11360), (1988, 10160), (2032, 9940), (2240, 9017), (2272, 8890), (2485, 8128), (2540, 7952), (2840, 7112), (3556, 5680), (3976, 5080), (4064, 4970), (4445, 4544)]