18783985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{479}}^1$

素因数の和:549

約数の個数: 32

約数和(自身を含む): 26542080

約数和(自身を除く): 7758095

約数列:

[1, 5, 11, 23, 31, 55, 115, 155, 253, 341, 479, 713, 1265, 1705, 2395, 3565, 5269, 7843, 11017, 14849, 26345, 39215, 55085, 74245, 121187, 163339, 341527, 605935, 816695, 1707635, 3756797, 18783985]

約数ペア:

[(1, 18783985), (5, 3756797), (11, 1707635), (23, 816695), (31, 605935), (55, 341527), (115, 163339), (155, 121187), (253, 74245), (341, 55085), (479, 39215), (713, 26345), (1265, 14849), (1705, 11017), (2395, 7843), (3565, 5269)]