20507474

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:171

約数の個数: 48

約数和(自身を含む): 36523872

約数和(自身を除く): 16016398

約数列:

[1, 2, 13, 17, 26, 34, 43, 83, 86, 166, 169, 221, 338, 442, 559, 731, 1079, 1118, 1411, 1462, 2158, 2822, 2873, 3569, 5746, 7138, 7267, 9503, 14027, 14534, 18343, 19006, 28054, 36686, 46397, 60673, 92794, 121346, 123539, 238459, 247078, 476918, 603161, 788749, 1206322, 1577498, 10253737, 20507474]

約数ペア:

[(1, 20507474), (2, 10253737), (13, 1577498), (17, 1206322), (26, 788749), (34, 603161), (43, 476918), (83, 247078), (86, 238459), (166, 123539), (169, 121346), (221, 92794), (338, 60673), (442, 46397), (559, 36686), (731, 28054), (1079, 19006), (1118, 18343), (1411, 14534), (1462, 14027), (2158, 9503), (2822, 7267), (2873, 7138), (3569, 5746)]