1971293571

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{41}}^2\times {\mathrm{257}}^1$

素因数の和:374

約数の個数: 72

約数和(自身を含む): 3253988880

約数和(自身を除く): 1282695309

約数列:

[1, 3, 9, 13, 27, 39, 41, 117, 123, 169, 257, 351, 369, 507, 533, 771, 1107, 1521, 1599, 1681, 2313, 3341, 4563, 4797, 5043, 6929, 6939, 10023, 10537, 14391, 15129, 20787, 21853, 30069, 31611, 43433, 45387, 62361, 65559, 90207, 94833, 130299, 136981, 187083, 196677, 284089, 284499, 390897, 410943, 432017, 590031, 852267, 1172691, 1232829, 1296051, 1780753, 2556801, 3698487, 3888153, 5342259, 5616221, 7670403, 11664459, 16026777, 16848663, 48080331, 50545989, 73010873, 151637967, 219032619, 657097857, 1971293571]

約数ペア:

[(1, 1971293571), (3, 657097857), (9, 219032619), (13, 151637967), (27, 73010873), (39, 50545989), (41, 48080331), (117, 16848663), (123, 16026777), (169, 11664459), (257, 7670403), (351, 5616221), (369, 5342259), (507, 3888153), (533, 3698487), (771, 2556801), (1107, 1780753), (1521, 1296051), (1599, 1232829), (1681, 1172691), (2313, 852267), (3341, 590031), (4563, 432017), (4797, 410943), (5043, 390897), (6929, 284499), (6939, 284089), (10023, 196677), (10537, 187083), (14391, 136981), (15129, 130299), (20787, 94833), (21853, 90207), (30069, 65559), (31611, 62361), (43433, 45387)]