19811222

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{6547}}^1$

素因数の和:6655

約数の個数: 16

約数和(自身を含む): 31823280

約数和(自身を除く): 12012058

約数列:

[1, 2, 17, 34, 89, 178, 1513, 3026, 6547, 13094, 111299, 222598, 582683, 1165366, 9905611, 19811222]

約数ペア:

[(1, 19811222), (2, 9905611), (17, 1165366), (34, 582683), (89, 222598), (178, 111299), (1513, 13094), (3026, 6547)]