21244923

素因数分解:

$3^4\times 7^1\times {\mathrm{89}}^1\times {\mathrm{421}}^1$

素因数の和:529

約数の個数: 40

約数和(自身を含む): 36764640

約数和(自身を除く): 15519717

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 89, 189, 267, 421, 567, 623, 801, 1263, 1869, 2403, 2947, 3789, 5607, 7209, 8841, 11367, 16821, 26523, 34101, 37469, 50463, 79569, 112407, 238707, 262283, 337221, 786849, 1011663, 2360547, 3034989, 7081641, 21244923]

約数ペア:

[(1, 21244923), (3, 7081641), (7, 3034989), (9, 2360547), (21, 1011663), (27, 786849), (63, 337221), (81, 262283), (89, 238707), (189, 112407), (267, 79569), (421, 50463), (567, 37469), (623, 34101), (801, 26523), (1263, 16821), (1869, 11367), (2403, 8841), (2947, 7209), (3789, 5607)]