20439848

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1051}}^1$

素因数の和:1098

約数の個数: 64

約数和(自身を含む): 47718720

約数和(自身を除く): 27278872

約数列:

[1, 2, 4, 8, 11, 13, 17, 22, 26, 34, 44, 52, 68, 88, 104, 136, 143, 187, 221, 286, 374, 442, 572, 748, 884, 1051, 1144, 1496, 1768, 2102, 2431, 4204, 4862, 8408, 9724, 11561, 13663, 17867, 19448, 23122, 27326, 35734, 46244, 54652, 71468, 92488, 109304, 142936, 150293, 196537, 232271, 300586, 393074, 464542, 601172, 786148, 929084, 1202344, 1572296, 1858168, 2554981, 5109962, 10219924, 20439848]

約数ペア:

[(1, 20439848), (2, 10219924), (4, 5109962), (8, 2554981), (11, 1858168), (13, 1572296), (17, 1202344), (22, 929084), (26, 786148), (34, 601172), (44, 464542), (52, 393074), (68, 300586), (88, 232271), (104, 196537), (136, 150293), (143, 142936), (187, 109304), (221, 92488), (286, 71468), (374, 54652), (442, 46244), (572, 35734), (748, 27326), (884, 23122), (1051, 19448), (1144, 17867), (1496, 13663), (1768, 11561), (2102, 9724), (2431, 8408), (4204, 4862)]