18735938

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1$

素因数の和:171

約数の個数: 64

約数和(自身を含む): 35562240

約数和(自身を除く): 16826302

約数列:

[1, 2, 13, 17, 19, 23, 26, 34, 38, 46, 97, 194, 221, 247, 299, 323, 391, 437, 442, 494, 598, 646, 782, 874, 1261, 1649, 1843, 2231, 2522, 3298, 3686, 4199, 4462, 5083, 5681, 7429, 8398, 10166, 11362, 14858, 21437, 23959, 29003, 31331, 37927, 42389, 42874, 47918, 58006, 62662, 75854, 84778, 96577, 193154, 407303, 493051, 551057, 720613, 814606, 986102, 1102114, 1441226, 9367969, 18735938]

約数ペア:

[(1, 18735938), (2, 9367969), (13, 1441226), (17, 1102114), (19, 986102), (23, 814606), (26, 720613), (34, 551057), (38, 493051), (46, 407303), (97, 193154), (194, 96577), (221, 84778), (247, 75854), (299, 62662), (323, 58006), (391, 47918), (437, 42874), (442, 42389), (494, 37927), (598, 31331), (646, 29003), (782, 23959), (874, 21437), (1261, 14858), (1649, 11362), (1843, 10166), (2231, 8398), (2522, 7429), (3298, 5681), (3686, 5083), (4199, 4462)]