20383804

素因数分解:

$2^2\times 7^3\times {\mathrm{83}}^1\times {\mathrm{179}}^1$

素因数の和:287

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 21952196

約数列:

[1, 2, 4, 7, 14, 28, 49, 83, 98, 166, 179, 196, 332, 343, 358, 581, 686, 716, 1162, 1253, 1372, 2324, 2506, 4067, 5012, 8134, 8771, 14857, 16268, 17542, 28469, 29714, 35084, 56938, 59428, 61397, 103999, 113876, 122794, 207998, 245588, 415996, 727993, 1455986, 2911972, 5095951, 10191902, 20383804]

約数ペア:

[(1, 20383804), (2, 10191902), (4, 5095951), (7, 2911972), (14, 1455986), (28, 727993), (49, 415996), (83, 245588), (98, 207998), (166, 122794), (179, 113876), (196, 103999), (332, 61397), (343, 59428), (358, 56938), (581, 35084), (686, 29714), (716, 28469), (1162, 17542), (1253, 16268), (1372, 14857), (2324, 8771), (2506, 8134), (4067, 5012)]