208339911

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1$

素因数の和:373

約数の個数: 64

約数和(自身を含む): 351267840

約数和(自身を除く): 142927929

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 117, 131, 197, 207, 299, 351, 393, 591, 621, 897, 1179, 1703, 1773, 2561, 2691, 3013, 3537, 4531, 5109, 5319, 7683, 8073, 9039, 13593, 15327, 23049, 25807, 27117, 39169, 40779, 45981, 58903, 69147, 77421, 81351, 117507, 122337, 176709, 232263, 335491, 352521, 530127, 593561, 696789, 1006473, 1057563, 1590381, 1780683, 3019419, 5342049, 7716293, 9058257, 16026147, 23148879, 69446637, 208339911]

約数ペア:

[(1, 208339911), (3, 69446637), (9, 23148879), (13, 16026147), (23, 9058257), (27, 7716293), (39, 5342049), (69, 3019419), (117, 1780683), (131, 1590381), (197, 1057563), (207, 1006473), (299, 696789), (351, 593561), (393, 530127), (591, 352521), (621, 335491), (897, 232263), (1179, 176709), (1703, 122337), (1773, 117507), (2561, 81351), (2691, 77421), (3013, 69147), (3537, 58903), (4531, 45981), (5109, 40779), (5319, 39169), (7683, 27117), (8073, 25807), (9039, 23049), (13593, 15327)]