19718139

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{4327}}^1$

素因数の和:4375

約数の個数: 24

約数和(自身を含む): 31577088

約数和(自身を除く): 11858949

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 4327, 4557, 12981, 30289, 90867, 134137, 212023, 402411, 636069, 938959, 2816877, 6572713, 19718139]

約数ペア:

[(1, 19718139), (3, 6572713), (7, 2816877), (21, 938959), (31, 636069), (49, 402411), (93, 212023), (147, 134137), (217, 90867), (651, 30289), (1519, 12981), (4327, 4557)]