16980405

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^2$

素因数の和:158

約数の個数: 48

約数和(自身を含む): 30782976

約数和(自身を除く): 13802571

約数列:

[1, 3, 5, 13, 15, 31, 39, 53, 65, 93, 155, 159, 195, 265, 403, 465, 689, 795, 1209, 1643, 2015, 2067, 2809, 3445, 4929, 6045, 8215, 8427, 10335, 14045, 21359, 24645, 36517, 42135, 64077, 87079, 106795, 109551, 182585, 261237, 320385, 435395, 547755, 1132027, 1306185, 3396081, 5660135, 16980405]

約数ペア:

[(1, 16980405), (3, 5660135), (5, 3396081), (13, 1306185), (15, 1132027), (31, 547755), (39, 435395), (53, 320385), (65, 261237), (93, 182585), (155, 109551), (159, 106795), (195, 87079), (265, 64077), (403, 42135), (465, 36517), (689, 24645), (795, 21359), (1209, 14045), (1643, 10335), (2015, 8427), (2067, 8215), (2809, 6045), (3445, 4929)]