18488912

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{863}}^1$

素因数の和:987

約数の個数: 40

約数和(自身を含む): 38997504

約数和(自身を除く): 20508592

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 103, 104, 206, 208, 412, 824, 863, 1339, 1648, 1726, 2678, 3452, 5356, 6904, 10712, 11219, 13808, 21424, 22438, 44876, 88889, 89752, 177778, 179504, 355556, 711112, 1155557, 1422224, 2311114, 4622228, 9244456, 18488912]

約数ペア:

[(1, 18488912), (2, 9244456), (4, 4622228), (8, 2311114), (13, 1422224), (16, 1155557), (26, 711112), (52, 355556), (103, 179504), (104, 177778), (206, 89752), (208, 88889), (412, 44876), (824, 22438), (863, 21424), (1339, 13808), (1648, 11219), (1726, 10712), (2678, 6904), (3452, 5356)]