81235557

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{241}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 131779648

約数和(自身を除く): 50544091

約数列:

[1, 3, 9, 13, 39, 43, 67, 117, 129, 201, 241, 387, 559, 603, 723, 871, 1677, 2169, 2613, 2881, 3133, 5031, 7839, 8643, 9399, 10363, 16147, 25929, 28197, 31089, 37453, 48441, 93267, 112359, 134719, 145323, 209911, 337077, 404157, 629733, 694321, 1212471, 1889199, 2082963, 6248889, 9026173, 27078519, 81235557]

約数ペア:

[(1, 81235557), (3, 27078519), (9, 9026173), (13, 6248889), (39, 2082963), (43, 1889199), (67, 1212471), (117, 694321), (129, 629733), (201, 404157), (241, 337077), (387, 209911), (559, 145323), (603, 134719), (723, 112359), (871, 93267), (1677, 48441), (2169, 37453), (2613, 31089), (2881, 28197), (3133, 25929), (5031, 16147), (7839, 10363), (8643, 9399)]