21272468

素因数分解:

$2^2\times 7^2\times {\mathrm{108533}}^1$

素因数の和:108551

約数の個数: 18

約数和(自身を含む): 43305066

約数和(自身を除く): 22032598

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 108533, 217066, 434132, 759731, 1519462, 3038924, 5318117, 10636234, 21272468]

約数ペア:

[(1, 21272468), (2, 10636234), (4, 5318117), (7, 3038924), (14, 1519462), (28, 759731), (49, 434132), (98, 217066), (196, 108533)]