21359295

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2293}}^1$

素因数の和:2333

約数の個数: 40

約数和(自身を含む): 39970656

約数和(自身を除く): 18611361

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 345, 405, 621, 1035, 1863, 2293, 3105, 6879, 9315, 11465, 20637, 34395, 52739, 61911, 103185, 158217, 185733, 263695, 309555, 474651, 791085, 928665, 1423953, 2373255, 4271859, 7119765, 21359295]

約数ペア:

[(1, 21359295), (3, 7119765), (5, 4271859), (9, 2373255), (15, 1423953), (23, 928665), (27, 791085), (45, 474651), (69, 309555), (81, 263695), (115, 185733), (135, 158217), (207, 103185), (345, 61911), (405, 52739), (621, 34395), (1035, 20637), (1863, 11465), (2293, 9315), (3105, 6879)]