78990989

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{1451}}^1$

素因数の和:1577

約数の個数: 24

約数和(自身を含む): 101303136

約数和(自身を除く): 22312147

約数列:

[1, 7, 11, 49, 77, 101, 539, 707, 1111, 1451, 4949, 7777, 10157, 15961, 54439, 71099, 111727, 146551, 782089, 1025857, 1612061, 7180999, 11284427, 78990989]

約数ペア:

[(1, 78990989), (7, 11284427), (11, 7180999), (49, 1612061), (77, 1025857), (101, 782089), (539, 146551), (707, 111727), (1111, 71099), (1451, 54439), (4949, 15961), (7777, 10157)]