18786820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3803}}^1$

素因数の和:3844

約数の個数: 48

約数和(自身を含む): 44735040

約数和(自身を除く): 25948220

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 3803, 4940, 7606, 15212, 19015, 38030, 49439, 72257, 76060, 98878, 144514, 197756, 247195, 289028, 361285, 494390, 722570, 939341, 988780, 1445140, 1878682, 3757364, 4696705, 9393410, 18786820]

約数ペア:

[(1, 18786820), (2, 9393410), (4, 4696705), (5, 3757364), (10, 1878682), (13, 1445140), (19, 988780), (20, 939341), (26, 722570), (38, 494390), (52, 361285), (65, 289028), (76, 247195), (95, 197756), (130, 144514), (190, 98878), (247, 76060), (260, 72257), (380, 49439), (494, 38030), (988, 19015), (1235, 15212), (2470, 7606), (3803, 4940)]