21292929

素因数分解:

$3^3\times 7^1\times {\mathrm{113}}^1\times {\mathrm{997}}^1$

素因数の和:1126

約数の個数: 32

約数和(自身を含む): 36407040

約数和(自身を除く): 15114111

約数列:

[1, 3, 7, 9, 21, 27, 63, 113, 189, 339, 791, 997, 1017, 2373, 2991, 3051, 6979, 7119, 8973, 20937, 21357, 26919, 62811, 112661, 188433, 337983, 788627, 1013949, 2365881, 3041847, 7097643, 21292929]

約数ペア:

[(1, 21292929), (3, 7097643), (7, 3041847), (9, 2365881), (21, 1013949), (27, 788627), (63, 337983), (113, 188433), (189, 112661), (339, 62811), (791, 26919), (997, 21357), (1017, 20937), (2373, 8973), (2991, 7119), (3051, 6979)]