20978757

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{6317}}^1$

素因数の和:6370

約数の個数: 20

約数和(自身を含む): 32108076

約数和(自身を除く): 11129319

約数列:

[1, 3, 9, 27, 41, 81, 123, 369, 1107, 3321, 6317, 18951, 56853, 170559, 258997, 511677, 776991, 2330973, 6992919, 20978757]

約数ペア:

[(1, 20978757), (3, 6992919), (9, 2330973), (27, 776991), (41, 511677), (81, 258997), (123, 170559), (369, 56853), (1107, 18951), (3321, 6317)]