20658904

素因数分解:

$2^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{12721}}^1$

素因数の和:12763

約数の個数: 32

約数和(自身を含む): 45799200

約数和(自身を除く): 25140296

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 56, 58, 116, 203, 232, 406, 812, 1624, 12721, 25442, 50884, 89047, 101768, 178094, 356188, 368909, 712376, 737818, 1475636, 2582363, 2951272, 5164726, 10329452, 20658904]

約数ペア:

[(1, 20658904), (2, 10329452), (4, 5164726), (7, 2951272), (8, 2582363), (14, 1475636), (28, 737818), (29, 712376), (56, 368909), (58, 356188), (116, 178094), (203, 101768), (232, 89047), (406, 50884), (812, 25442), (1624, 12721)]