68900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1$

素因数の和:80

約数の個数: 36

約数和(自身を含む): 164052

約数和(自身を除く): 95152

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 53, 65, 100, 106, 130, 212, 260, 265, 325, 530, 650, 689, 1060, 1300, 1325, 1378, 2650, 2756, 3445, 5300, 6890, 13780, 17225, 34450, 68900]

約数ペア:

[(1, 68900), (2, 34450), (4, 17225), (5, 13780), (10, 6890), (13, 5300), (20, 3445), (25, 2756), (26, 2650), (50, 1378), (52, 1325), (53, 1300), (65, 1060), (100, 689), (106, 650), (130, 530), (212, 325), (260, 265)]