20721363

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{487}}^1\times {\mathrm{1091}}^1$

素因数の和:1594

約数の個数: 16

約数和(自身を含む): 29842176

約数和(自身を除く): 9120813

約数列:

[1, 3, 13, 39, 487, 1091, 1461, 3273, 6331, 14183, 18993, 42549, 531317, 1593951, 6907121, 20721363]

約数ペア:

[(1, 20721363), (3, 6907121), (13, 1593951), (39, 531317), (487, 42549), (1091, 18993), (1461, 14183), (3273, 6331)]