19939401

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{769}}^1$

素因数の和:885

約数の個数: 24

約数和(自身を含む): 29949920

約数和(自身を除く): 10010519

約数列:

[1, 3, 9, 43, 67, 129, 201, 387, 603, 769, 2307, 2881, 6921, 8643, 25929, 33067, 51523, 99201, 154569, 297603, 463707, 2215489, 6646467, 19939401]

約数ペア:

[(1, 19939401), (3, 6646467), (9, 2215489), (43, 463707), (67, 297603), (129, 154569), (201, 99201), (387, 51523), (603, 33067), (769, 25929), (2307, 8643), (2881, 6921)]