78719888

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{19919}}^1$

素因数の和:19959

約数の個数: 40

約数和(自身を含む): 172905600

約数和(自身を除く): 94185712

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 19919, 39838, 79676, 159352, 258947, 318704, 378461, 517894, 756922, 1035788, 1513844, 2071576, 3027688, 4143152, 4919993, 6055376, 9839986, 19679972, 39359944, 78719888]

約数ペア:

[(1, 78719888), (2, 39359944), (4, 19679972), (8, 9839986), (13, 6055376), (16, 4919993), (19, 4143152), (26, 3027688), (38, 2071576), (52, 1513844), (76, 1035788), (104, 756922), (152, 517894), (208, 378461), (247, 318704), (304, 258947), (494, 159352), (988, 79676), (1976, 39838), (3952, 19919)]