20885704

素因数分解:

$2^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{4721}}^1$

素因数の和:4813

約数の個数: 32

約数和(自身を含む): 45331200

約数和(自身を除く): 24445496

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 79, 158, 316, 553, 632, 1106, 2212, 4424, 4721, 9442, 18884, 33047, 37768, 66094, 132188, 264376, 372959, 745918, 1491836, 2610713, 2983672, 5221426, 10442852, 20885704]

約数ペア:

[(1, 20885704), (2, 10442852), (4, 5221426), (7, 2983672), (8, 2610713), (14, 1491836), (28, 745918), (56, 372959), (79, 264376), (158, 132188), (316, 66094), (553, 37768), (632, 33047), (1106, 18884), (2212, 9442), (4424, 4721)]