21291279561

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{569}}^1\times {\mathrm{1109}}^1$

素因数の和:1870

約数の個数: 48

約数和(自身を含む): 32373993600

約数和(自身を除く): 11082714039

約数列:

[1, 3, 9, 23, 69, 163, 207, 489, 569, 1109, 1467, 1707, 3327, 3749, 5121, 9981, 11247, 13087, 25507, 33741, 39261, 76521, 92747, 117783, 180767, 229563, 278241, 542301, 631021, 834723, 1626903, 1893063, 2133181, 4157641, 5679189, 6399543, 12472923, 14513483, 19198629, 37418769, 43540449, 102856423, 130621347, 308569269, 925707807, 2365697729, 7097093187, 21291279561]

約数ペア:

[(1, 21291279561), (3, 7097093187), (9, 2365697729), (23, 925707807), (69, 308569269), (163, 130621347), (207, 102856423), (489, 43540449), (569, 37418769), (1109, 19198629), (1467, 14513483), (1707, 12472923), (3327, 6399543), (3749, 5679189), (5121, 4157641), (9981, 2133181), (11247, 1893063), (13087, 1626903), (25507, 834723), (33741, 631021), (39261, 542301), (76521, 278241), (92747, 229563), (117783, 180767)]