31815580

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{4007}}^1$

素因数の和:4413

約数の個数: 24

約数和(自身を含む): 66997728

約数和(自身を除く): 35182148

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 4007, 7940, 8014, 16028, 20035, 40070, 80140, 1590779, 3181558, 6363116, 7953895, 15907790, 31815580]

約数ペア:

[(1, 31815580), (2, 15907790), (4, 7953895), (5, 6363116), (10, 3181558), (20, 1590779), (397, 80140), (794, 40070), (1588, 20035), (1985, 16028), (3970, 8014), (4007, 7940)]