20150207

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2591}}^1$

素因数の和:2710

約数の個数: 16

約数和(自身を含む): 25380864

約数和(自身を除く): 5230657

約数列:

[1, 7, 11, 77, 101, 707, 1111, 2591, 7777, 18137, 28501, 199507, 261691, 1831837, 2878601, 20150207]

約数ペア:

[(1, 20150207), (7, 2878601), (11, 1831837), (77, 261691), (101, 199507), (707, 28501), (1111, 18137), (2591, 7777)]