208531778

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{179}}^1$

素因数の和:411

約数の個数: 64

約数和(自身を含む): 399893760

約数和(自身を除く): 191361982

約数列:

[1, 2, 7, 13, 14, 26, 37, 74, 91, 173, 179, 182, 259, 346, 358, 481, 518, 962, 1211, 1253, 2249, 2327, 2422, 2506, 3367, 4498, 4654, 6401, 6623, 6734, 12802, 13246, 15743, 16289, 30967, 31486, 32578, 44807, 46361, 61934, 83213, 86099, 89614, 92722, 166426, 172198, 216769, 402571, 433538, 582491, 602693, 805142, 1145779, 1164982, 1205386, 2291558, 2817997, 5635994, 8020453, 14895127, 16040906, 29790254, 104265889, 208531778]

約数ペア:

[(1, 208531778), (2, 104265889), (7, 29790254), (13, 16040906), (14, 14895127), (26, 8020453), (37, 5635994), (74, 2817997), (91, 2291558), (173, 1205386), (179, 1164982), (182, 1145779), (259, 805142), (346, 602693), (358, 582491), (481, 433538), (518, 402571), (962, 216769), (1211, 172198), (1253, 166426), (2249, 92722), (2327, 89614), (2422, 86099), (2506, 83213), (3367, 61934), (4498, 46361), (4654, 44807), (6401, 32578), (6623, 31486), (6734, 30967), (12802, 16289), (13246, 15743)]