20395128

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{499}}^1$

素因数の和:652

約数の個数: 64

約数和(自身を含む): 55440000

約数和(自身を除く): 35044872

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 131, 156, 262, 312, 393, 499, 524, 786, 998, 1048, 1497, 1572, 1703, 1996, 2994, 3144, 3406, 3992, 5109, 5988, 6487, 6812, 10218, 11976, 12974, 13624, 19461, 20436, 25948, 38922, 40872, 51896, 65369, 77844, 130738, 155688, 196107, 261476, 392214, 522952, 784428, 849797, 1568856, 1699594, 2549391, 3399188, 5098782, 6798376, 10197564, 20395128]

約数ペア:

[(1, 20395128), (2, 10197564), (3, 6798376), (4, 5098782), (6, 3399188), (8, 2549391), (12, 1699594), (13, 1568856), (24, 849797), (26, 784428), (39, 522952), (52, 392214), (78, 261476), (104, 196107), (131, 155688), (156, 130738), (262, 77844), (312, 65369), (393, 51896), (499, 40872), (524, 38922), (786, 25948), (998, 20436), (1048, 19461), (1497, 13624), (1572, 12974), (1703, 11976), (1996, 10218), (2994, 6812), (3144, 6487), (3406, 5988), (3992, 5109)]