128216805

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^2\times {\mathrm{179}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 222626880

約数和(自身を除く): 94410075

約数列:

[1, 3, 5, 15, 17, 51, 53, 85, 159, 179, 255, 265, 537, 795, 895, 901, 2685, 2703, 2809, 3043, 4505, 8427, 9129, 9487, 13515, 14045, 15215, 28461, 42135, 45645, 47435, 47753, 142305, 143259, 161279, 238765, 483837, 502811, 716295, 806395, 1508433, 2419185, 2514055, 7542165, 8547787, 25643361, 42738935, 128216805]

約数ペア:

[(1, 128216805), (3, 42738935), (5, 25643361), (15, 8547787), (17, 7542165), (51, 2514055), (53, 2419185), (85, 1508433), (159, 806395), (179, 716295), (255, 502811), (265, 483837), (537, 238765), (795, 161279), (895, 143259), (901, 142305), (2685, 47753), (2703, 47435), (2809, 45645), (3043, 42135), (4505, 28461), (8427, 15215), (9129, 14045), (9487, 13515)]