65238380

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79559}}^1$

素因数の和:79609

約数の個数: 24

約数和(自身を含む): 140343840

約数和(自身を除く): 75105460

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 79559, 159118, 318236, 397795, 795590, 1591180, 3261919, 6523838, 13047676, 16309595, 32619190, 65238380]

約数ペア:

[(1, 65238380), (2, 32619190), (4, 16309595), (5, 13047676), (10, 6523838), (20, 3261919), (41, 1591180), (82, 795590), (164, 397795), (205, 318236), (410, 159118), (820, 79559)]