20794480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{523}}^1$

素因数の和:614

約数の個数: 80

約数和(自身を含む): 56139264

約数和(自身を除く): 35344784

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 71, 80, 112, 140, 142, 280, 284, 355, 497, 523, 560, 568, 710, 994, 1046, 1136, 1420, 1988, 2092, 2485, 2615, 2840, 3661, 3976, 4184, 4970, 5230, 5680, 7322, 7952, 8368, 9940, 10460, 14644, 18305, 19880, 20920, 29288, 36610, 37133, 39760, 41840, 58576, 73220, 74266, 146440, 148532, 185665, 259931, 292880, 297064, 371330, 519862, 594128, 742660, 1039724, 1299655, 1485320, 2079448, 2599310, 2970640, 4158896, 5198620, 10397240, 20794480]

約数ペア:

[(1, 20794480), (2, 10397240), (4, 5198620), (5, 4158896), (7, 2970640), (8, 2599310), (10, 2079448), (14, 1485320), (16, 1299655), (20, 1039724), (28, 742660), (35, 594128), (40, 519862), (56, 371330), (70, 297064), (71, 292880), (80, 259931), (112, 185665), (140, 148532), (142, 146440), (280, 74266), (284, 73220), (355, 58576), (497, 41840), (523, 39760), (560, 37133), (568, 36610), (710, 29288), (994, 20920), (1046, 19880), (1136, 18305), (1420, 14644), (1988, 10460), (2092, 9940), (2485, 8368), (2615, 7952), (2840, 7322), (3661, 5680), (3976, 5230), (4184, 4970)]