900000005

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{73141}}^1$

素因数の和:73276

約数の個数: 16

約数和(自身を含む): 1137504384

約数和(自身を除く): 237504379

約数列:

[1, 5, 23, 107, 115, 535, 2461, 12305, 73141, 365705, 1682243, 7826087, 8411215, 39130435, 180000001, 900000005]

約数ペア:

[(1, 900000005), (5, 180000001), (23, 39130435), (107, 8411215), (115, 7826087), (535, 1682243), (2461, 365705), (12305, 73141)]