72571780

素因数分解:

$2^2\times 5^1\times {\mathrm{431}}^1\times {\mathrm{8419}}^1$

素因数の和:8859

約数の個数: 24

約数和(自身を含む): 152772480

約数和(自身を除く): 80200700

約数列:

[1, 2, 4, 5, 10, 20, 431, 862, 1724, 2155, 4310, 8419, 8620, 16838, 33676, 42095, 84190, 168380, 3628589, 7257178, 14514356, 18142945, 36285890, 72571780]

約数ペア:

[(1, 72571780), (2, 36285890), (4, 18142945), (5, 14514356), (10, 7257178), (20, 3628589), (431, 168380), (862, 84190), (1724, 42095), (2155, 33676), (4310, 16838), (8419, 8620)]