72945940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{1979}}^1$

素因数の和:2104

約数の個数: 48

約数和(自身を含む): 162993600

約数和(自身を除く): 90047660

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 97, 190, 194, 380, 388, 485, 970, 1843, 1940, 1979, 3686, 3958, 7372, 7916, 9215, 9895, 18430, 19790, 36860, 37601, 39580, 75202, 150404, 188005, 191963, 376010, 383926, 752020, 767852, 959815, 1919630, 3647297, 3839260, 7294594, 14589188, 18236485, 36472970, 72945940]

約数ペア:

[(1, 72945940), (2, 36472970), (4, 18236485), (5, 14589188), (10, 7294594), (19, 3839260), (20, 3647297), (38, 1919630), (76, 959815), (95, 767852), (97, 752020), (190, 383926), (194, 376010), (380, 191963), (388, 188005), (485, 150404), (970, 75202), (1843, 39580), (1940, 37601), (1979, 36860), (3686, 19790), (3958, 18430), (7372, 9895), (7916, 9215)]