18845739

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{233}}^1$

素因数の和:312

約数の個数: 48

約数和(自身を含む): 32123520

約数和(自身を除く): 13277781

約数列:

[1, 3, 9, 11, 19, 33, 43, 57, 99, 129, 171, 209, 233, 387, 473, 627, 699, 817, 1419, 1881, 2097, 2451, 2563, 4257, 4427, 7353, 7689, 8987, 10019, 13281, 23067, 26961, 30057, 39843, 48697, 80883, 90171, 110209, 146091, 190361, 330627, 438273, 571083, 991881, 1713249, 2093971, 6281913, 18845739]

約数ペア:

[(1, 18845739), (3, 6281913), (9, 2093971), (11, 1713249), (19, 991881), (33, 571083), (43, 438273), (57, 330627), (99, 190361), (129, 146091), (171, 110209), (209, 90171), (233, 80883), (387, 48697), (473, 39843), (627, 30057), (699, 26961), (817, 23067), (1419, 13281), (1881, 10019), (2097, 8987), (2451, 7689), (2563, 7353), (4257, 4427)]