1821981681

素因数分解:

$3^6\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{263}}^1$

素因数の和:354

約数の個数: 112

約数和(自身を含む): 3199464576

約数和(自身を除く): 1377482895

約数列:

[1, 3, 9, 13, 17, 27, 39, 43, 51, 81, 117, 129, 153, 221, 243, 263, 351, 387, 459, 559, 663, 729, 731, 789, 1053, 1161, 1377, 1677, 1989, 2193, 2367, 3159, 3419, 3483, 4131, 4471, 5031, 5967, 6579, 7101, 9477, 9503, 10257, 10449, 11309, 12393, 13413, 15093, 17901, 19737, 21303, 28509, 30771, 31347, 33927, 40239, 45279, 53703, 58123, 59211, 63909, 85527, 92313, 101781, 120717, 135837, 147017, 161109, 174369, 177633, 191727, 192253, 256581, 276939, 305343, 362151, 407511, 441051, 523107, 532899, 576759, 769743, 830817, 916029, 1086453, 1323153, 1569321, 1730277, 2309229, 2492451, 2499289, 2748087, 3259359, 3969459, 4707963, 5190831, 6927687, 7497867, 8244261, 11908377, 14123889, 15572493, 22493601, 35725131, 42371667, 46717479, 67480803, 107175393, 140152437, 202442409, 607327227, 1821981681]

約数ペア:

[(1, 1821981681), (3, 607327227), (9, 202442409), (13, 140152437), (17, 107175393), (27, 67480803), (39, 46717479), (43, 42371667), (51, 35725131), (81, 22493601), (117, 15572493), (129, 14123889), (153, 11908377), (221, 8244261), (243, 7497867), (263, 6927687), (351, 5190831), (387, 4707963), (459, 3969459), (559, 3259359), (663, 2748087), (729, 2499289), (731, 2492451), (789, 2309229), (1053, 1730277), (1161, 1569321), (1377, 1323153), (1677, 1086453), (1989, 916029), (2193, 830817), (2367, 769743), (3159, 576759), (3419, 532899), (3483, 523107), (4131, 441051), (4471, 407511), (5031, 362151), (5967, 305343), (6579, 276939), (7101, 256581), (9477, 192253), (9503, 191727), (10257, 177633), (10449, 174369), (11309, 161109), (12393, 147017), (13413, 135837), (15093, 120717), (17901, 101781), (19737, 92313), (21303, 85527), (28509, 63909), (30771, 59211), (31347, 58123), (33927, 53703), (40239, 45279)]