20471778

素因数分解:

$2^1\times 3^6\times {\mathrm{19}}^1\times {\mathrm{739}}^1$

素因数の和:778

約数の個数: 56

約数和(自身を含む): 48529200

約数和(自身を除く): 28057422

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 81, 114, 162, 171, 243, 342, 486, 513, 729, 739, 1026, 1458, 1478, 1539, 2217, 3078, 4434, 4617, 6651, 9234, 13302, 13851, 14041, 19953, 27702, 28082, 39906, 42123, 59859, 84246, 119718, 126369, 179577, 252738, 359154, 379107, 538731, 758214, 1077462, 1137321, 2274642, 3411963, 6823926, 10235889, 20471778]

約数ペア:

[(1, 20471778), (2, 10235889), (3, 6823926), (6, 3411963), (9, 2274642), (18, 1137321), (19, 1077462), (27, 758214), (38, 538731), (54, 379107), (57, 359154), (81, 252738), (114, 179577), (162, 126369), (171, 119718), (243, 84246), (342, 59859), (486, 42123), (513, 39906), (729, 28082), (739, 27702), (1026, 19953), (1458, 14041), (1478, 13851), (1539, 13302), (2217, 9234), (3078, 6651), (4434, 4617)]