28196505

素因数分解:

$3^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1009}}^1$

素因数の和:1052

約数の個数: 48

約数和(自身を含む): 52940160

約数和(自身を除く): 24743655

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 243, 345, 405, 621, 1009, 1035, 1215, 1863, 3027, 3105, 5045, 5589, 9081, 9315, 15135, 23207, 27243, 27945, 45405, 69621, 81729, 116035, 136215, 208863, 245187, 348105, 408645, 626589, 1044315, 1225935, 1879767, 3132945, 5639301, 9398835, 28196505]

約数ペア:

[(1, 28196505), (3, 9398835), (5, 5639301), (9, 3132945), (15, 1879767), (23, 1225935), (27, 1044315), (45, 626589), (69, 408645), (81, 348105), (115, 245187), (135, 208863), (207, 136215), (243, 116035), (345, 81729), (405, 69621), (621, 45405), (1009, 27945), (1035, 27243), (1215, 23207), (1863, 15135), (3027, 9315), (3105, 9081), (5045, 5589)]