78518480

素因数分解:

$2^4\times 5^1\times {\mathrm{981481}}^1$

素因数の和:981494

約数の個数: 20

約数和(自身を含む): 182555652

約数和(自身を除く): 104037172

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 981481, 1962962, 3925924, 4907405, 7851848, 9814810, 15703696, 19629620, 39259240, 78518480]

約数ペア:

[(1, 78518480), (2, 39259240), (4, 19629620), (5, 15703696), (8, 9814810), (10, 7851848), (16, 4907405), (20, 3925924), (40, 1962962), (80, 981481)]