18879536

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{653}}^1$

素因数の和:813

約数の個数: 40

約数和(自身を含む): 39737040

約数和(自身を除く): 20857504

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 139, 208, 278, 556, 653, 1112, 1306, 1807, 2224, 2612, 3614, 5224, 7228, 8489, 10448, 14456, 16978, 28912, 33956, 67912, 90767, 135824, 181534, 363068, 726136, 1179971, 1452272, 2359942, 4719884, 9439768, 18879536]

約数ペア:

[(1, 18879536), (2, 9439768), (4, 4719884), (8, 2359942), (13, 1452272), (16, 1179971), (26, 726136), (52, 363068), (104, 181534), (139, 135824), (208, 90767), (278, 67912), (556, 33956), (653, 28912), (1112, 16978), (1306, 14456), (1807, 10448), (2224, 8489), (2612, 7228), (3614, 5224)]