21299025

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{2347}}^1$

素因数の和:2382

約数の個数: 36

約数和(自身を含む): 38723216

約数和(自身を除く): 17424191

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 121, 165, 275, 363, 605, 825, 1815, 2347, 3025, 7041, 9075, 11735, 25817, 35205, 58675, 77451, 129085, 176025, 283987, 387255, 645425, 851961, 1419935, 1936275, 4259805, 7099675, 21299025]

約数ペア:

[(1, 21299025), (3, 7099675), (5, 4259805), (11, 1936275), (15, 1419935), (25, 851961), (33, 645425), (55, 387255), (75, 283987), (121, 176025), (165, 129085), (275, 77451), (363, 58675), (605, 35205), (825, 25817), (1815, 11735), (2347, 9075), (3025, 7041)]