20916828

素因数分解:

$2^2\times 3^2\times {\mathrm{103}}^1\times {\mathrm{5641}}^1$

素因数の和:5754

約数の個数: 36

約数和(自身を含む): 53395888

約数和(自身を除く): 32479060

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 103, 206, 309, 412, 618, 927, 1236, 1854, 3708, 5641, 11282, 16923, 22564, 33846, 50769, 67692, 101538, 203076, 581023, 1162046, 1743069, 2324092, 3486138, 5229207, 6972276, 10458414, 20916828]

約数ペア:

[(1, 20916828), (2, 10458414), (3, 6972276), (4, 5229207), (6, 3486138), (9, 2324092), (12, 1743069), (18, 1162046), (36, 581023), (103, 203076), (206, 101538), (309, 67692), (412, 50769), (618, 33846), (927, 22564), (1236, 16923), (1854, 11282), (3708, 5641)]