81691184

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{268721}}^1$

素因数の和:268748

約数の個数: 20

約数和(自身を含む): 166607640

約数和(自身を除く): 84916456

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 268721, 537442, 1074884, 2149768, 4299536, 5105699, 10211398, 20422796, 40845592, 81691184]

約数ペア:

[(1, 81691184), (2, 40845592), (4, 20422796), (8, 10211398), (16, 5105699), (19, 4299536), (38, 2149768), (76, 1074884), (152, 537442), (304, 268721)]