12821721

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{10501}}^1$

素因数の和:10552

約数の個数: 16

約数和(自身を含む): 19155648

約数和(自身を除く): 6333927

約数列:

[1, 3, 11, 33, 37, 111, 407, 1221, 10501, 31503, 115511, 346533, 388537, 1165611, 4273907, 12821721]

約数ペア:

[(1, 12821721), (3, 4273907), (11, 1165611), (33, 388537), (37, 346533), (111, 115511), (407, 31503), (1221, 10501)]