20137383

素因数分解:

$3^3\times 7^2\times {\mathrm{31}}^1\times {\mathrm{491}}^1$

素因数の和:545

約数の個数: 48

約数和(自身を含む): 35896320

約数和(自身を除く): 15758937

約数列:

[1, 3, 7, 9, 21, 27, 31, 49, 63, 93, 147, 189, 217, 279, 441, 491, 651, 837, 1323, 1473, 1519, 1953, 3437, 4419, 4557, 5859, 10311, 13257, 13671, 15221, 24059, 30933, 41013, 45663, 72177, 92799, 106547, 136989, 216531, 319641, 410967, 649593, 745829, 958923, 2237487, 2876769, 6712461, 20137383]

約数ペア:

[(1, 20137383), (3, 6712461), (7, 2876769), (9, 2237487), (21, 958923), (27, 745829), (31, 649593), (49, 410967), (63, 319641), (93, 216531), (147, 136989), (189, 106547), (217, 92799), (279, 72177), (441, 45663), (491, 41013), (651, 30933), (837, 24059), (1323, 15221), (1473, 13671), (1519, 13257), (1953, 10311), (3437, 5859), (4419, 4557)]