20781456

素因数分解:

$2^4\times 3^1\times {\mathrm{563}}^1\times {\mathrm{769}}^1$

素因数の和:1343

約数の個数: 40

約数和(自身を含む): 53850720

約数和(自身を除く): 33069264

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 563, 769, 1126, 1538, 1689, 2252, 2307, 3076, 3378, 4504, 4614, 6152, 6756, 9008, 9228, 12304, 13512, 18456, 27024, 36912, 432947, 865894, 1298841, 1731788, 2597682, 3463576, 5195364, 6927152, 10390728, 20781456]

約数ペア:

[(1, 20781456), (2, 10390728), (3, 6927152), (4, 5195364), (6, 3463576), (8, 2597682), (12, 1731788), (16, 1298841), (24, 865894), (48, 432947), (563, 36912), (769, 27024), (1126, 18456), (1538, 13512), (1689, 12304), (2252, 9228), (2307, 9008), (3076, 6756), (3378, 6152), (4504, 4614)]