208545579

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:285

約数の個数: 72

約数和(自身を含む): 360339408

約数和(自身を除く): 151793829

約数列:

[1, 3, 9, 11, 17, 33, 37, 51, 99, 111, 153, 187, 197, 289, 333, 407, 561, 591, 629, 867, 1221, 1683, 1773, 1887, 2167, 2601, 3179, 3349, 3663, 5661, 6501, 6919, 7289, 9537, 10047, 10693, 19503, 20757, 21867, 28611, 30141, 32079, 36839, 56933, 62271, 65601, 80179, 96237, 110517, 117623, 123913, 170799, 240537, 331551, 352869, 371739, 512397, 626263, 721611, 1058607, 1115217, 1363043, 1878789, 2106521, 4089129, 5636367, 6319563, 12267387, 18958689, 23171731, 69515193, 208545579]

約数ペア:

[(1, 208545579), (3, 69515193), (9, 23171731), (11, 18958689), (17, 12267387), (33, 6319563), (37, 5636367), (51, 4089129), (99, 2106521), (111, 1878789), (153, 1363043), (187, 1115217), (197, 1058607), (289, 721611), (333, 626263), (407, 512397), (561, 371739), (591, 352869), (629, 331551), (867, 240537), (1221, 170799), (1683, 123913), (1773, 117623), (1887, 110517), (2167, 96237), (2601, 80179), (3179, 65601), (3349, 62271), (3663, 56933), (5661, 36839), (6501, 32079), (6919, 30141), (7289, 28611), (9537, 21867), (10047, 20757), (10693, 19503)]