21253179

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{331}}^1\times {\mathrm{1259}}^1$

素因数の和:1610

約数の個数: 16

約数和(自身を含む): 30119040

約数和(自身を除く): 8865861

約数列:

[1, 3, 17, 51, 331, 993, 1259, 3777, 5627, 16881, 21403, 64209, 416729, 1250187, 7084393, 21253179]

約数ペア:

[(1, 21253179), (3, 7084393), (17, 1250187), (51, 416729), (331, 64209), (993, 21403), (1259, 16881), (3777, 5627)]