91878787

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{263}}^1\times {\mathrm{349}}^1$

素因数の和:643

約数の個数: 32

約数和(自身を含む): 124185600

約数和(自身を除く): 32306813

約数列:

[1, 7, 11, 13, 77, 91, 143, 263, 349, 1001, 1841, 2443, 2893, 3419, 3839, 4537, 20251, 23933, 26873, 31759, 37609, 49907, 91787, 263263, 349349, 642509, 1009657, 1193231, 7067599, 8352617, 13125541, 91878787]

約数ペア:

[(1, 91878787), (7, 13125541), (11, 8352617), (13, 7067599), (77, 1193231), (91, 1009657), (143, 642509), (263, 349349), (349, 263263), (1001, 91787), (1841, 49907), (2443, 37609), (2893, 31759), (3419, 26873), (3839, 23933), (4537, 20251)]