28355805

素因数分解:

$3^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:211

約数の個数: 64

約数和(自身を含む): 53222400

約数和(自身を除く): 24866595

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 47, 109, 123, 135, 141, 205, 235, 327, 369, 423, 545, 615, 705, 981, 1107, 1269, 1635, 1845, 1927, 2115, 2943, 4469, 4905, 5123, 5535, 5781, 6345, 9635, 13407, 14715, 15369, 17343, 22345, 25615, 28905, 40221, 46107, 52029, 67035, 76845, 86715, 120663, 138321, 201105, 210043, 230535, 260145, 603315, 630129, 691605, 1050215, 1890387, 3150645, 5671161, 9451935, 28355805]

約数ペア:

[(1, 28355805), (3, 9451935), (5, 5671161), (9, 3150645), (15, 1890387), (27, 1050215), (41, 691605), (45, 630129), (47, 603315), (109, 260145), (123, 230535), (135, 210043), (141, 201105), (205, 138321), (235, 120663), (327, 86715), (369, 76845), (423, 67035), (545, 52029), (615, 46107), (705, 40221), (981, 28905), (1107, 25615), (1269, 22345), (1635, 17343), (1845, 15369), (1927, 14715), (2115, 13407), (2943, 9635), (4469, 6345), (4905, 5781), (5123, 5535)]