21169372

素因数分解:

$2^2\times 7^2\times {\mathrm{108007}}^1$

素因数の和:108025

約数の個数: 18

約数和(自身を含む): 43095192

約数和(自身を除く): 21925820

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 108007, 216014, 432028, 756049, 1512098, 3024196, 5292343, 10584686, 21169372]

約数ペア:

[(1, 21169372), (2, 10584686), (4, 5292343), (7, 3024196), (14, 1512098), (28, 756049), (49, 432028), (98, 216014), (196, 108007)]