21739719

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{439}}^1\times {\mathrm{971}}^1$

素因数の和:1430

約数の個数: 16

約数和(自身を含む): 30792960

約数和(自身を除く): 9053241

約数列:

[1, 3, 17, 51, 439, 971, 1317, 2913, 7463, 16507, 22389, 49521, 426269, 1278807, 7246573, 21739719]

約数ペア:

[(1, 21739719), (3, 7246573), (17, 1278807), (51, 426269), (439, 49521), (971, 22389), (1317, 16507), (2913, 7463)]