21241227

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{21521}}^1$

素因数の和:21578

約数の個数: 16

約数和(自身を含む): 33057792

約数和(自身を除く): 11816565

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 21521, 64563, 150647, 451941, 1011487, 3034461, 7080409, 21241227]

約数ペア:

[(1, 21241227), (3, 7080409), (7, 3034461), (21, 1011487), (47, 451941), (141, 150647), (329, 64563), (987, 21521)]