8959990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{439}}^1$

素因数の和:616

約数の個数: 32

約数和(自身を含む): 17519040

約数和(自身を除く): 8559050

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 157, 314, 439, 785, 878, 1570, 2041, 2195, 4082, 4390, 5707, 10205, 11414, 20410, 28535, 57070, 68923, 137846, 344615, 689230, 895999, 1791998, 4479995, 8959990]

約数ペア:

[(1, 8959990), (2, 4479995), (5, 1791998), (10, 895999), (13, 689230), (26, 344615), (65, 137846), (130, 68923), (157, 57070), (314, 28535), (439, 20410), (785, 11414), (878, 10205), (1570, 5707), (2041, 4390), (2195, 4082)]