18907070

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:369

約数の個数: 64

約数和(自身を含む): 42577920

約数和(自身を除く): 23670850

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 79, 91, 130, 158, 182, 263, 395, 455, 526, 553, 790, 910, 1027, 1106, 1315, 1841, 2054, 2630, 2765, 3419, 3682, 5135, 5530, 6838, 7189, 9205, 10270, 14378, 17095, 18410, 20777, 23933, 34190, 35945, 41554, 47866, 71890, 103885, 119665, 145439, 207770, 239330, 270101, 290878, 540202, 727195, 1350505, 1454390, 1890707, 2701010, 3781414, 9453535, 18907070]

約数ペア:

[(1, 18907070), (2, 9453535), (5, 3781414), (7, 2701010), (10, 1890707), (13, 1454390), (14, 1350505), (26, 727195), (35, 540202), (65, 290878), (70, 270101), (79, 239330), (91, 207770), (130, 145439), (158, 119665), (182, 103885), (263, 71890), (395, 47866), (455, 41554), (526, 35945), (553, 34190), (790, 23933), (910, 20777), (1027, 18410), (1106, 17095), (1315, 14378), (1841, 10270), (2054, 9205), (2630, 7189), (2765, 6838), (3419, 5530), (3682, 5135)]