21512868

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{577}}^1$

素因数の和:836

約数の個数: 48

約数和(自身を含む): 54378240

約数和(自身を除く): 32865372

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 239, 478, 577, 717, 956, 1154, 1434, 1731, 2308, 2868, 3107, 3462, 6214, 6924, 7501, 9321, 12428, 15002, 18642, 22503, 30004, 37284, 45006, 90012, 137903, 275806, 413709, 551612, 827418, 1654836, 1792739, 3585478, 5378217, 7170956, 10756434, 21512868]

約数ペア:

[(1, 21512868), (2, 10756434), (3, 7170956), (4, 5378217), (6, 3585478), (12, 1792739), (13, 1654836), (26, 827418), (39, 551612), (52, 413709), (78, 275806), (156, 137903), (239, 90012), (478, 45006), (577, 37284), (717, 30004), (956, 22503), (1154, 18642), (1434, 15002), (1731, 12428), (2308, 9321), (2868, 7501), (3107, 6924), (3462, 6214)]