31842280

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{1847}}^1$

素因数の和:2289

約数の個数: 32

約数和(自身を含む): 71850240

約数和(自身を除く): 40007960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1724, 1847, 2155, 3448, 3694, 4310, 7388, 8620, 9235, 14776, 17240, 18470, 36940, 73880, 796057, 1592114, 3184228, 3980285, 6368456, 7960570, 15921140, 31842280]

約数ペア:

[(1, 31842280), (2, 15921140), (4, 7960570), (5, 6368456), (8, 3980285), (10, 3184228), (20, 1592114), (40, 796057), (431, 73880), (862, 36940), (1724, 18470), (1847, 17240), (2155, 14776), (3448, 9235), (3694, 8620), (4310, 7388)]