20955285

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{317}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 39587184

約数和(自身を除く): 18631899

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 113, 117, 195, 317, 339, 565, 585, 951, 1017, 1469, 1585, 1695, 2853, 4121, 4407, 4755, 5085, 7345, 12363, 13221, 14265, 20605, 22035, 35821, 37089, 61815, 66105, 107463, 179105, 185445, 322389, 465673, 537315, 1397019, 1611945, 2328365, 4191057, 6985095, 20955285]

約数ペア:

[(1, 20955285), (3, 6985095), (5, 4191057), (9, 2328365), (13, 1611945), (15, 1397019), (39, 537315), (45, 465673), (65, 322389), (113, 185445), (117, 179105), (195, 107463), (317, 66105), (339, 61815), (565, 37089), (585, 35821), (951, 22035), (1017, 20605), (1469, 14265), (1585, 13221), (1695, 12363), (2853, 7345), (4121, 5085), (4407, 4755)]