21235635

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{487}}^1$

素因数の和:537

約数の個数: 64

約数和(自身を含む): 42163200

約数和(自身を除く): 20927565

約数列:

[1, 3, 5, 9, 15, 17, 19, 27, 45, 51, 57, 85, 95, 135, 153, 171, 255, 285, 323, 459, 487, 513, 765, 855, 969, 1461, 1615, 2295, 2435, 2565, 2907, 4383, 4845, 7305, 8279, 8721, 9253, 13149, 14535, 21915, 24837, 27759, 41395, 43605, 46265, 65745, 74511, 83277, 124185, 138795, 157301, 223533, 249831, 372555, 416385, 471903, 786505, 1117665, 1249155, 1415709, 2359515, 4247127, 7078545, 21235635]

約数ペア:

[(1, 21235635), (3, 7078545), (5, 4247127), (9, 2359515), (15, 1415709), (17, 1249155), (19, 1117665), (27, 786505), (45, 471903), (51, 416385), (57, 372555), (85, 249831), (95, 223533), (135, 157301), (153, 138795), (171, 124185), (255, 83277), (285, 74511), (323, 65745), (459, 46265), (487, 43605), (513, 41395), (765, 27759), (855, 24837), (969, 21915), (1461, 14535), (1615, 13149), (2295, 9253), (2435, 8721), (2565, 8279), (2907, 7305), (4383, 4845)]