21504615

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^2\times {\mathrm{59}}^1$

素因数の和:172

約数の個数: 48

約数和(自身を含む): 39000960

約数和(自身を除く): 17496345

約数列:

[1, 3, 5, 11, 15, 33, 47, 55, 59, 141, 165, 177, 235, 295, 517, 649, 705, 885, 1551, 1947, 2209, 2585, 2773, 3245, 6627, 7755, 8319, 9735, 11045, 13865, 24299, 30503, 33135, 41595, 72897, 91509, 121495, 130331, 152515, 364485, 390993, 457545, 651655, 1433641, 1954965, 4300923, 7168205, 21504615]

約数ペア:

[(1, 21504615), (3, 7168205), (5, 4300923), (11, 1954965), (15, 1433641), (33, 651655), (47, 457545), (55, 390993), (59, 364485), (141, 152515), (165, 130331), (177, 121495), (235, 91509), (295, 72897), (517, 41595), (649, 33135), (705, 30503), (885, 24299), (1551, 13865), (1947, 11045), (2209, 9735), (2585, 8319), (2773, 7755), (3245, 6627)]