21247208

素因数分解:

$2^3\times {\mathrm{79}}^1\times {\mathrm{33619}}^1$

素因数の和:33704

約数の個数: 16

約数和(自身を含む): 40344000

約数和(自身を除く): 19096792

約数列:

[1, 2, 4, 8, 79, 158, 316, 632, 33619, 67238, 134476, 268952, 2655901, 5311802, 10623604, 21247208]

約数ペア:

[(1, 21247208), (2, 10623604), (4, 5311802), (8, 2655901), (79, 268952), (158, 134476), (316, 67238), (632, 33619)]