21097604

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 41912640

約数和(自身を除く): 20815036

約数列:

[1, 2, 4, 11, 22, 44, 53, 83, 106, 109, 166, 212, 218, 332, 436, 583, 913, 1166, 1199, 1826, 2332, 2398, 3652, 4399, 4796, 5777, 8798, 9047, 11554, 17596, 18094, 23108, 36188, 48389, 63547, 96778, 99517, 127094, 193556, 199034, 254188, 398068, 479491, 958982, 1917964, 5274401, 10548802, 21097604]

約数ペア:

[(1, 21097604), (2, 10548802), (4, 5274401), (11, 1917964), (22, 958982), (44, 479491), (53, 398068), (83, 254188), (106, 199034), (109, 193556), (166, 127094), (212, 99517), (218, 96778), (332, 63547), (436, 48389), (583, 36188), (913, 23108), (1166, 18094), (1199, 17596), (1826, 11554), (2332, 9047), (2398, 8798), (3652, 5777), (4399, 4796)]