31881982

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{20411}}^1$

素因数の和:20495

約数の個数: 16

約数和(自身を含む): 52907904

約数和(自身を除く): 21025922

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 20411, 40822, 224521, 449042, 1449181, 2898362, 15940991, 31881982]

約数ペア:

[(1, 31881982), (2, 15940991), (11, 2898362), (22, 1449181), (71, 449042), (142, 224521), (781, 40822), (1562, 20411)]