71488420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{87181}}^1$

素因数の和:87231

約数の個数: 24

約数和(自身を含む): 153789048

約数和(自身を除く): 82300628

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 87181, 174362, 348724, 435905, 871810, 1743620, 3574421, 7148842, 14297684, 17872105, 35744210, 71488420]

約数ペア:

[(1, 71488420), (2, 35744210), (4, 17872105), (5, 14297684), (10, 7148842), (20, 3574421), (41, 1743620), (82, 871810), (164, 435905), (205, 348724), (410, 174362), (820, 87181)]