20645361

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1$

素因数の和:116

約数の個数: 80

約数和(自身を含む): 37635840

約数和(自身を除く): 16990479

約数列:

[1, 3, 9, 11, 17, 27, 29, 33, 47, 51, 81, 87, 99, 141, 153, 187, 261, 297, 319, 423, 459, 493, 517, 561, 783, 799, 891, 957, 1269, 1363, 1377, 1479, 1551, 1683, 2349, 2397, 2871, 3807, 4089, 4437, 4653, 5049, 5423, 7191, 8613, 8789, 12267, 13311, 13959, 14993, 15147, 16269, 21573, 23171, 25839, 26367, 36801, 39933, 41877, 44979, 48807, 64719, 69513, 79101, 110403, 134937, 146421, 208539, 237303, 254881, 404811, 439263, 625617, 711909, 764643, 1214433, 1876851, 2293929, 6881787, 20645361]

約数ペア:

[(1, 20645361), (3, 6881787), (9, 2293929), (11, 1876851), (17, 1214433), (27, 764643), (29, 711909), (33, 625617), (47, 439263), (51, 404811), (81, 254881), (87, 237303), (99, 208539), (141, 146421), (153, 134937), (187, 110403), (261, 79101), (297, 69513), (319, 64719), (423, 48807), (459, 44979), (493, 41877), (517, 39933), (561, 36801), (783, 26367), (799, 25839), (891, 23171), (957, 21573), (1269, 16269), (1363, 15147), (1377, 14993), (1479, 13959), (1551, 13311), (1683, 12267), (2349, 8789), (2397, 8613), (2871, 7191), (3807, 5423), (4089, 5049), (4437, 4653)]