20015765

素因数分解:

$5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{1061}}^1$

素因数の和:1098

約数の個数: 32

約数和(自身を含む): 30585600

約数和(自身を除く): 10569835

約数列:

[1, 5, 7, 11, 35, 49, 55, 77, 245, 343, 385, 539, 1061, 1715, 2695, 3773, 5305, 7427, 11671, 18865, 37135, 51989, 58355, 81697, 259945, 363923, 408485, 571879, 1819615, 2859395, 4003153, 20015765]

約数ペア:

[(1, 20015765), (5, 4003153), (7, 2859395), (11, 1819615), (35, 571879), (49, 408485), (55, 363923), (77, 259945), (245, 81697), (343, 58355), (385, 51989), (539, 37135), (1061, 18865), (1715, 11671), (2695, 7427), (3773, 5305)]