18641945

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 28882560

約数和(自身を除く): 10240615

約数列:

[1, 5, 7, 17, 19, 35, 85, 95, 97, 119, 133, 289, 323, 485, 595, 665, 679, 1445, 1615, 1649, 1843, 2023, 2261, 3395, 5491, 8245, 9215, 10115, 11305, 11543, 12901, 27455, 28033, 31331, 38437, 57715, 64505, 140165, 156655, 192185, 196231, 219317, 532627, 981155, 1096585, 2663135, 3728389, 18641945]

約数ペア:

[(1, 18641945), (5, 3728389), (7, 2663135), (17, 1096585), (19, 981155), (35, 532627), (85, 219317), (95, 196231), (97, 192185), (119, 156655), (133, 140165), (289, 64505), (323, 57715), (485, 38437), (595, 31331), (665, 28033), (679, 27455), (1445, 12901), (1615, 11543), (1649, 11305), (1843, 10115), (2023, 9215), (2261, 8245), (3395, 5491)]