31313080

素因数分解:

$2^3\times 5^1\times {\mathrm{541}}^1\times {\mathrm{1447}}^1$

素因数の和:1999

約数の個数: 32

約数和(自身を含む): 70633440

約数和(自身を除く): 39320360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 541, 1082, 1447, 2164, 2705, 2894, 4328, 5410, 5788, 7235, 10820, 11576, 14470, 21640, 28940, 57880, 782827, 1565654, 3131308, 3914135, 6262616, 7828270, 15656540, 31313080]

約数ペア:

[(1, 31313080), (2, 15656540), (4, 7828270), (5, 6262616), (8, 3914135), (10, 3131308), (20, 1565654), (40, 782827), (541, 57880), (1082, 28940), (1447, 21640), (2164, 14470), (2705, 11576), (2894, 10820), (4328, 7235), (5410, 5788)]