18138806

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{97}}^1$

素因数の和:181

約数の個数: 48

約数和(自身を含む): 34052256

約数和(自身を除く): 15913450

約数列:

[1, 2, 7, 14, 19, 37, 38, 74, 97, 133, 194, 259, 266, 361, 518, 679, 703, 722, 1358, 1406, 1843, 2527, 3589, 3686, 4921, 5054, 7178, 9842, 12901, 13357, 25123, 25802, 26714, 35017, 50246, 68191, 70034, 93499, 136382, 186998, 245119, 477337, 490238, 954674, 1295629, 2591258, 9069403, 18138806]

約数ペア:

[(1, 18138806), (2, 9069403), (7, 2591258), (14, 1295629), (19, 954674), (37, 490238), (38, 477337), (74, 245119), (97, 186998), (133, 136382), (194, 93499), (259, 70034), (266, 68191), (361, 50246), (518, 35017), (679, 26714), (703, 25802), (722, 25123), (1358, 13357), (1406, 12901), (1843, 9842), (2527, 7178), (3589, 5054), (3686, 4921)]