21839643

素因数分解:

$3^2\times 7^2\times {\mathrm{49523}}^1$

素因数の和:49543

約数の個数: 18

約数和(自身を含む): 36697284

約数和(自身を除く): 14857641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 49523, 148569, 346661, 445707, 1039983, 2426627, 3119949, 7279881, 21839643]

約数ペア:

[(1, 21839643), (3, 7279881), (7, 3119949), (9, 2426627), (21, 1039983), (49, 445707), (63, 346661), (147, 148569), (441, 49523)]