21339955

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{46901}}^1$

素因数の和:46926

約数の個数: 16

約数和(自身を含む): 31518144

約数和(自身を除く): 10178189

約数列:

[1, 5, 7, 13, 35, 65, 91, 455, 46901, 234505, 328307, 609713, 1641535, 3048565, 4267991, 21339955]

約数ペア:

[(1, 21339955), (5, 4267991), (7, 3048565), (13, 1641535), (35, 609713), (65, 328307), (91, 234505), (455, 46901)]