18949217

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{3181}}^1$

素因数の和:3248

約数の個数: 16

約数和(自身を含む): 23215872

約数和(自身を除く): 4266655

約数列:

[1, 7, 23, 37, 161, 259, 851, 3181, 5957, 22267, 73163, 117697, 512141, 823879, 2707031, 18949217]

約数ペア:

[(1, 18949217), (7, 2707031), (23, 823879), (37, 512141), (161, 117697), (259, 73163), (851, 22267), (3181, 5957)]