21062745

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2503}}^1$

素因数の和:2542

約数の個数: 48

約数和(自身を含む): 42187392

約数和(自身を除く): 21124647

約数列:

[1, 3, 5, 9, 11, 15, 17, 33, 45, 51, 55, 85, 99, 153, 165, 187, 255, 495, 561, 765, 935, 1683, 2503, 2805, 7509, 8415, 12515, 22527, 27533, 37545, 42551, 82599, 112635, 127653, 137665, 212755, 247797, 382959, 412995, 468061, 638265, 1238985, 1404183, 1914795, 2340305, 4212549, 7020915, 21062745]

約数ペア:

[(1, 21062745), (3, 7020915), (5, 4212549), (9, 2340305), (11, 1914795), (15, 1404183), (17, 1238985), (33, 638265), (45, 468061), (51, 412995), (55, 382959), (85, 247797), (99, 212755), (153, 137665), (165, 127653), (187, 112635), (255, 82599), (495, 42551), (561, 37545), (765, 27533), (935, 22527), (1683, 12515), (2503, 8415), (2805, 7509)]