21053619

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{1279}}^1$

素因数の和:1375

約数の個数: 24

約数和(自身を含む): 31948800

約数和(自身を除く): 10895181

約数列:

[1, 3, 9, 31, 59, 93, 177, 279, 531, 1279, 1829, 3837, 5487, 11511, 16461, 39649, 75461, 118947, 226383, 356841, 679149, 2339291, 7017873, 21053619]

約数ペア:

[(1, 21053619), (3, 7017873), (9, 2339291), (31, 679149), (59, 356841), (93, 226383), (177, 118947), (279, 75461), (531, 39649), (1279, 16461), (1829, 11511), (3837, 5487)]