81187184

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{390323}}^1$

素因数の和:390344

約数の個数: 20

約数和(自身を含む): 169400616

約数和(自身を除く): 88213432

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 390323, 780646, 1561292, 3122584, 5074199, 6245168, 10148398, 20296796, 40593592, 81187184]

約数ペア:

[(1, 81187184), (2, 40593592), (4, 20296796), (8, 10148398), (13, 6245168), (16, 5074199), (26, 3122584), (52, 1561292), (104, 780646), (208, 390323)]