81751285

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^2\times {\mathrm{61}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 126456192

約数和(自身を除く): 44704907

約数列:

[1, 5, 7, 11, 35, 55, 59, 61, 77, 295, 305, 385, 413, 427, 649, 671, 2065, 2135, 3245, 3355, 3481, 3599, 4543, 4697, 17405, 17995, 22715, 23485, 24367, 25193, 38291, 39589, 121835, 125965, 191455, 197945, 212341, 268037, 277123, 1061705, 1340185, 1385615, 1486387, 2335751, 7431935, 11678755, 16350257, 81751285]

約数ペア:

[(1, 81751285), (5, 16350257), (7, 11678755), (11, 7431935), (35, 2335751), (55, 1486387), (59, 1385615), (61, 1340185), (77, 1061705), (295, 277123), (305, 268037), (385, 212341), (413, 197945), (427, 191455), (649, 125965), (671, 121835), (2065, 39589), (2135, 38291), (3245, 25193), (3355, 24367), (3481, 23485), (3599, 22715), (4543, 17995), (4697, 17405)]