11720990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{68947}}^1$

素因数の和:68971

約数の個数: 16

約数和(自身を含む): 22339152

約数和(自身を除く): 10618162

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 68947, 137894, 344735, 689470, 1172099, 2344198, 5860495, 11720990]

約数ペア:

[(1, 11720990), (2, 5860495), (5, 2344198), (10, 1172099), (17, 689470), (34, 344735), (85, 137894), (170, 68947)]