20871393

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{4219}}^1$

素因数の和:4336

約数の個数: 16

約数和(自身を含む): 29776320

約数和(自身を除く): 8904927

約数列:

[1, 3, 17, 51, 97, 291, 1649, 4219, 4947, 12657, 71723, 215169, 409243, 1227729, 6957131, 20871393]

約数ペア:

[(1, 20871393), (3, 6957131), (17, 1227729), (51, 409243), (97, 215169), (291, 71723), (1649, 12657), (4219, 4947)]