31117880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{10957}}^1$

素因数の和:11039

約数の個数: 32

約数和(自身を含む): 71007840

約数和(自身を除く): 39889960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 10957, 21914, 43828, 54785, 87656, 109570, 219140, 438280, 777947, 1555894, 3111788, 3889735, 6223576, 7779470, 15558940, 31117880]

約数ペア:

[(1, 31117880), (2, 15558940), (4, 7779470), (5, 6223576), (8, 3889735), (10, 3111788), (20, 1555894), (40, 777947), (71, 438280), (142, 219140), (284, 109570), (355, 87656), (568, 54785), (710, 43828), (1420, 21914), (2840, 10957)]