81499664

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{268091}}^1$

素因数の和:268118

約数の個数: 20

約数和(自身を含む): 166217040

約数和(自身を除く): 84717376

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 268091, 536182, 1072364, 2144728, 4289456, 5093729, 10187458, 20374916, 40749832, 81499664]

約数ペア:

[(1, 81499664), (2, 40749832), (4, 20374916), (8, 10187458), (16, 5093729), (19, 4289456), (38, 2144728), (76, 1072364), (152, 536182), (304, 268091)]