15681980

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{5641}}^1$

素因数の和:5789

約数の個数: 24

約数和(自身を含む): 33174960

約数和(自身を除く): 17492980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 5641, 11282, 22564, 28205, 56410, 112820, 784099, 1568198, 3136396, 3920495, 7840990, 15681980]

約数ペア:

[(1, 15681980), (2, 7840990), (4, 3920495), (5, 3136396), (10, 1568198), (20, 784099), (139, 112820), (278, 56410), (556, 28205), (695, 22564), (1390, 11282), (2780, 5641)]