21372981

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{32831}}^1$

素因数の和:32872

約数の個数: 16

約数和(自身を含む): 33619968

約数和(自身を除く): 12246987

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 32831, 98493, 229817, 689451, 1017761, 3053283, 7124327, 21372981]

約数ペア:

[(1, 21372981), (3, 7124327), (7, 3053283), (21, 1017761), (31, 689451), (93, 229817), (217, 98493), (651, 32831)]