21251672

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{1609}}^1$

素因数の和:1755

約数の個数: 32

約数和(自身を含む): 43276800

約数和(自身を除く): 22025128

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 127, 254, 508, 1016, 1609, 1651, 3218, 3302, 6436, 6604, 12872, 13208, 20917, 41834, 83668, 167336, 204343, 408686, 817372, 1634744, 2656459, 5312918, 10625836, 21251672]

約数ペア:

[(1, 21251672), (2, 10625836), (4, 5312918), (8, 2656459), (13, 1634744), (26, 817372), (52, 408686), (104, 204343), (127, 167336), (254, 83668), (508, 41834), (1016, 20917), (1609, 13208), (1651, 12872), (3218, 6604), (3302, 6436)]