21202904

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{509}}^1$

素因数の和:683

約数の個数: 32

約数和(自身を含む): 41126400

約数和(自身を除く): 19923496

約数列:

[1, 2, 4, 8, 41, 82, 127, 164, 254, 328, 508, 509, 1016, 1018, 2036, 4072, 5207, 10414, 20828, 20869, 41656, 41738, 64643, 83476, 129286, 166952, 258572, 517144, 2650363, 5300726, 10601452, 21202904]

約数ペア:

[(1, 21202904), (2, 10601452), (4, 5300726), (8, 2650363), (41, 517144), (82, 258572), (127, 166952), (164, 129286), (254, 83476), (328, 64643), (508, 41738), (509, 41656), (1016, 20869), (1018, 20828), (2036, 10414), (4072, 5207)]