21088137

素因数分解:

$3^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{3271}}^1$

素因数の和:3588

約数の個数: 16

約数和(自身を含む): 32248832

約数和(自身を除く): 11160695

約数列:

[1, 3, 7, 21, 307, 921, 2149, 3271, 6447, 9813, 22897, 68691, 1004197, 3012591, 7029379, 21088137]

約数ペア:

[(1, 21088137), (3, 7029379), (7, 3012591), (21, 1004197), (307, 68691), (921, 22897), (2149, 9813), (3271, 6447)]