21867651

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1093}}^1$

素因数の和:1137

約数の個数: 40

約数和(自身を含む): 37064720

約数和(自身を除く): 15197069

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 81, 117, 171, 247, 351, 513, 741, 1053, 1093, 1539, 2223, 3279, 6669, 9837, 14209, 20007, 20767, 29511, 42627, 62301, 88533, 127881, 186903, 269971, 383643, 560709, 809913, 1150929, 1682127, 2429739, 7289217, 21867651]

約数ペア:

[(1, 21867651), (3, 7289217), (9, 2429739), (13, 1682127), (19, 1150929), (27, 809913), (39, 560709), (57, 383643), (81, 269971), (117, 186903), (171, 127881), (247, 88533), (351, 62301), (513, 42627), (741, 29511), (1053, 20767), (1093, 20007), (1539, 14209), (2223, 9837), (3279, 6669)]