81447561

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{40949}}^1$

素因数の和:40985

約数の個数: 24

約数和(自身を含む): 134152200

約数和(自身を除く): 52704639

約数列:

[1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989, 40949, 122847, 368541, 532337, 696133, 1597011, 2088399, 4791033, 6265197, 9049729, 27149187, 81447561]

約数ペア:

[(1, 81447561), (3, 27149187), (9, 9049729), (13, 6265197), (17, 4791033), (39, 2088399), (51, 1597011), (117, 696133), (153, 532337), (221, 368541), (663, 122847), (1989, 40949)]