20838285

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{199}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 39312000

約数和(自身を除く): 18473715

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 179, 195, 199, 537, 585, 597, 895, 995, 1611, 1791, 2327, 2587, 2685, 2985, 6981, 7761, 8055, 8955, 11635, 12935, 20943, 23283, 34905, 35621, 38805, 104715, 106863, 116415, 178105, 320589, 463073, 534315, 1389219, 1602945, 2315365, 4167657, 6946095, 20838285]

約数ペア:

[(1, 20838285), (3, 6946095), (5, 4167657), (9, 2315365), (13, 1602945), (15, 1389219), (39, 534315), (45, 463073), (65, 320589), (117, 178105), (179, 116415), (195, 106863), (199, 104715), (537, 38805), (585, 35621), (597, 34905), (895, 23283), (995, 20943), (1611, 12935), (1791, 11635), (2327, 8955), (2587, 8055), (2685, 7761), (2985, 6981)]