20219703

素因数分解:

$3^1\times 7^2\times {\mathrm{263}}^1\times {\mathrm{523}}^1$

素因数の和:803

約数の個数: 24

約数和(自身を含む): 31540608

約数和(自身を除く): 11320905

約数列:

[1, 3, 7, 21, 49, 147, 263, 523, 789, 1569, 1841, 3661, 5523, 10983, 12887, 25627, 38661, 76881, 137549, 412647, 962843, 2888529, 6739901, 20219703]

約数ペア:

[(1, 20219703), (3, 6739901), (7, 2888529), (21, 962843), (49, 412647), (147, 137549), (263, 76881), (523, 38661), (789, 25627), (1569, 12887), (1841, 10983), (3661, 5523)]