1285686520

素因数分解:

$2^3\times 5^1\times {\mathrm{32142163}}^1$

素因数の和:32142174

約数の個数: 16

約数和(自身を含む): 2892794760

約数和(自身を除く): 1607108240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 32142163, 64284326, 128568652, 160710815, 257137304, 321421630, 642843260, 1285686520]

約数ペア:

[(1, 1285686520), (2, 642843260), (4, 321421630), (5, 257137304), (8, 160710815), (10, 128568652), (20, 64284326), (40, 32142163)]