20487225

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1307}}^1$

素因数の和:1350

約数の個数: 48

約数和(自身を含む): 38926080

約数和(自身を除く): 18438855

約数列:

[1, 3, 5, 11, 15, 19, 25, 33, 55, 57, 75, 95, 165, 209, 275, 285, 475, 627, 825, 1045, 1307, 1425, 3135, 3921, 5225, 6535, 14377, 15675, 19605, 24833, 32675, 43131, 71885, 74499, 98025, 124165, 215655, 273163, 359425, 372495, 620825, 819489, 1078275, 1365815, 1862475, 4097445, 6829075, 20487225]

約数ペア:

[(1, 20487225), (3, 6829075), (5, 4097445), (11, 1862475), (15, 1365815), (19, 1078275), (25, 819489), (33, 620825), (55, 372495), (57, 359425), (75, 273163), (95, 215655), (165, 124165), (209, 98025), (275, 74499), (285, 71885), (475, 43131), (627, 32675), (825, 24833), (1045, 19605), (1307, 15675), (1425, 14377), (3135, 6535), (3921, 5225)]