21293889

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{397}}^1\times {\mathrm{941}}^1$

素因数の和:1360

約数の個数: 16

約数和(自身を含む): 29993280

約数和(自身を除く): 8699391

約数列:

[1, 3, 19, 57, 397, 941, 1191, 2823, 7543, 17879, 22629, 53637, 373577, 1120731, 7097963, 21293889]

約数ペア:

[(1, 21293889), (3, 7097963), (19, 1120731), (57, 373577), (397, 53637), (941, 22629), (1191, 17879), (2823, 7543)]