20803185

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{827}}^1$

素因数の和:894

約数の個数: 48

約数和(自身を含む): 39783744

約数和(自身を除く): 18980559

約数列:

[1, 3, 5, 9, 13, 15, 39, 43, 45, 65, 117, 129, 195, 215, 387, 559, 585, 645, 827, 1677, 1935, 2481, 2795, 4135, 5031, 7443, 8385, 10751, 12405, 25155, 32253, 35561, 37215, 53755, 96759, 106683, 161265, 177805, 320049, 462293, 483795, 533415, 1386879, 1600245, 2311465, 4160637, 6934395, 20803185]

約数ペア:

[(1, 20803185), (3, 6934395), (5, 4160637), (9, 2311465), (13, 1600245), (15, 1386879), (39, 533415), (43, 483795), (45, 462293), (65, 320049), (117, 177805), (129, 161265), (195, 106683), (215, 96759), (387, 53755), (559, 37215), (585, 35561), (645, 32253), (827, 25155), (1677, 12405), (1935, 10751), (2481, 8385), (2795, 7443), (4135, 5031)]