18763227

素因数分解:

$3^2\times 7^2\times {\mathrm{157}}^1\times {\mathrm{271}}^1$

素因数の和:448

約数の個数: 36

約数和(自身を含む): 31845216

約数和(自身を除く): 13081989

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 157, 271, 441, 471, 813, 1099, 1413, 1897, 2439, 3297, 5691, 7693, 9891, 13279, 17073, 23079, 39837, 42547, 69237, 119511, 127641, 297829, 382923, 893487, 2084803, 2680461, 6254409, 18763227]

約数ペア:

[(1, 18763227), (3, 6254409), (7, 2680461), (9, 2084803), (21, 893487), (49, 382923), (63, 297829), (147, 127641), (157, 119511), (271, 69237), (441, 42547), (471, 39837), (813, 23079), (1099, 17073), (1413, 13279), (1897, 9891), (2439, 7693), (3297, 5691)]