247804557

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{461}}^1$

素因数の和:674

約数の個数: 64

約数和(自身を含む): 447068160

約数和(自身を除く): 199263603

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 143, 179, 231, 273, 429, 461, 537, 1001, 1253, 1383, 1969, 2327, 3003, 3227, 3759, 5071, 5907, 5993, 6981, 9681, 13783, 15213, 16289, 17979, 25597, 35497, 41349, 41951, 48867, 65923, 76791, 82519, 106491, 125853, 179179, 197769, 247557, 461461, 537537, 577633, 907709, 1072747, 1384383, 1732899, 2723127, 3218241, 6353963, 7509229, 11800217, 19061889, 22527687, 35400651, 82601519, 247804557]

約数ペア:

[(1, 247804557), (3, 82601519), (7, 35400651), (11, 22527687), (13, 19061889), (21, 11800217), (33, 7509229), (39, 6353963), (77, 3218241), (91, 2723127), (143, 1732899), (179, 1384383), (231, 1072747), (273, 907709), (429, 577633), (461, 537537), (537, 461461), (1001, 247557), (1253, 197769), (1383, 179179), (1969, 125853), (2327, 106491), (3003, 82519), (3227, 76791), (3759, 65923), (5071, 48867), (5907, 41951), (5993, 41349), (6981, 35497), (9681, 25597), (13783, 17979), (15213, 16289)]