81780152

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{237733}}^1$

素因数の和:237782

約数の個数: 16

約数和(自身を含む): 156904440

約数和(自身を除く): 75124288

約数列:

[1, 2, 4, 8, 43, 86, 172, 344, 237733, 475466, 950932, 1901864, 10222519, 20445038, 40890076, 81780152]

約数ペア:

[(1, 81780152), (2, 40890076), (4, 20445038), (8, 10222519), (43, 1901864), (86, 950932), (172, 475466), (344, 237733)]