19700121

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{40787}}^1$

素因数の和:40820

約数の個数: 16

約数和(自身を含む): 31325184

約数和(自身を除く): 11625063

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 40787, 122361, 285509, 856527, 938101, 2814303, 6566707, 19700121]

約数ペア:

[(1, 19700121), (3, 6566707), (7, 2814303), (21, 938101), (23, 856527), (69, 285509), (161, 122361), (483, 40787)]