21118845

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{7529}}^1$

素因数の和:7565

約数の個数: 32

約数和(自身を含む): 39035520

約数和(自身を除く): 17916675

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 165, 187, 255, 561, 935, 2805, 7529, 22587, 37645, 82819, 112935, 127993, 248457, 383979, 414095, 639965, 1242285, 1407923, 1919895, 4223769, 7039615, 21118845]

約数ペア:

[(1, 21118845), (3, 7039615), (5, 4223769), (11, 1919895), (15, 1407923), (17, 1242285), (33, 639965), (51, 414095), (55, 383979), (85, 248457), (165, 127993), (187, 112935), (255, 82819), (561, 37645), (935, 22587), (2805, 7529)]