261111357

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:496

約数の個数: 80

約数和(自身を含む): 457515520

約数和(自身を除く): 196404163

約数列:

[1, 3, 9, 13, 19, 27, 31, 39, 57, 81, 93, 117, 171, 247, 279, 351, 403, 421, 513, 589, 741, 837, 1053, 1209, 1263, 1539, 1767, 2223, 2511, 3627, 3789, 5301, 5473, 6669, 7657, 7999, 10881, 11367, 13051, 15903, 16419, 20007, 22971, 23997, 32643, 34101, 39153, 47709, 49257, 68913, 71991, 103987, 117459, 147771, 169663, 206739, 215973, 247969, 311961, 352377, 443313, 508989, 620217, 647919, 743907, 935883, 1057131, 1526967, 2231721, 2807649, 3223597, 4580901, 6695163, 8422947, 9670791, 13742703, 20085489, 29012373, 87037119, 261111357]

約数ペア:

[(1, 261111357), (3, 87037119), (9, 29012373), (13, 20085489), (19, 13742703), (27, 9670791), (31, 8422947), (39, 6695163), (57, 4580901), (81, 3223597), (93, 2807649), (117, 2231721), (171, 1526967), (247, 1057131), (279, 935883), (351, 743907), (403, 647919), (421, 620217), (513, 508989), (589, 443313), (741, 352377), (837, 311961), (1053, 247969), (1209, 215973), (1263, 206739), (1539, 169663), (1767, 147771), (2223, 117459), (2511, 103987), (3627, 71991), (3789, 68913), (5301, 49257), (5473, 47709), (6669, 39153), (7657, 34101), (7999, 32643), (10881, 23997), (11367, 22971), (13051, 20007), (15903, 16419)]