20661256

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1973}}^1$

素因数の和:2014

約数の個数: 64

約数和(自身を含む): 51166080

約数和(自身を除く): 30504824

約数列:

[1, 2, 4, 7, 8, 11, 14, 17, 22, 28, 34, 44, 56, 68, 77, 88, 119, 136, 154, 187, 238, 308, 374, 476, 616, 748, 952, 1309, 1496, 1973, 2618, 3946, 5236, 7892, 10472, 13811, 15784, 21703, 27622, 33541, 43406, 55244, 67082, 86812, 110488, 134164, 151921, 173624, 234787, 268328, 303842, 368951, 469574, 607684, 737902, 939148, 1215368, 1475804, 1878296, 2582657, 2951608, 5165314, 10330628, 20661256]

約数ペア:

[(1, 20661256), (2, 10330628), (4, 5165314), (7, 2951608), (8, 2582657), (11, 1878296), (14, 1475804), (17, 1215368), (22, 939148), (28, 737902), (34, 607684), (44, 469574), (56, 368951), (68, 303842), (77, 268328), (88, 234787), (119, 173624), (136, 151921), (154, 134164), (187, 110488), (238, 86812), (308, 67082), (374, 55244), (476, 43406), (616, 33541), (748, 27622), (952, 21703), (1309, 15784), (1496, 13811), (1973, 10472), (2618, 7892), (3946, 5236)]