18913265

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 29548800

約数和(自身を除く): 10635535

約数列:

[1, 5, 7, 17, 19, 35, 49, 85, 95, 119, 133, 239, 245, 323, 595, 665, 833, 931, 1195, 1615, 1673, 2261, 4063, 4165, 4541, 4655, 8365, 11305, 11711, 15827, 20315, 22705, 28441, 31787, 58555, 77197, 79135, 142205, 158935, 199087, 222509, 385985, 540379, 995435, 1112545, 2701895, 3782653, 18913265]

約数ペア:

[(1, 18913265), (5, 3782653), (7, 2701895), (17, 1112545), (19, 995435), (35, 540379), (49, 385985), (85, 222509), (95, 199087), (119, 158935), (133, 142205), (239, 79135), (245, 77197), (323, 58555), (595, 31787), (665, 28441), (833, 22705), (931, 20315), (1195, 15827), (1615, 11711), (1673, 11305), (2261, 8365), (4063, 4655), (4165, 4541)]