18876678145

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{919}}^1\times {\mathrm{7349}}^1$

素因数の和:8329

約数の個数: 32

約数和(自身を含む): 24992352000

約数和(自身を除く): 6115673855

約数列:

[1, 5, 13, 43, 65, 215, 559, 919, 2795, 4595, 7349, 11947, 36745, 39517, 59735, 95537, 197585, 316007, 477685, 513721, 1580035, 2568605, 4108091, 6753731, 20540455, 33768655, 87798503, 290410433, 438992515, 1452052165, 3775335629, 18876678145]

約数ペア:

[(1, 18876678145), (5, 3775335629), (13, 1452052165), (43, 438992515), (65, 290410433), (215, 87798503), (559, 33768655), (919, 20540455), (2795, 6753731), (4595, 4108091), (7349, 2568605), (11947, 1580035), (36745, 513721), (39517, 477685), (59735, 316007), (95537, 197585)]