20804820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{2531}}^1$

素因数の和:2680

約数の個数: 48

約数和(自身を含む): 58701888

約数和(自身を除く): 37897068

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 137, 274, 411, 548, 685, 822, 1370, 1644, 2055, 2531, 2740, 4110, 5062, 7593, 8220, 10124, 12655, 15186, 25310, 30372, 37965, 50620, 75930, 151860, 346747, 693494, 1040241, 1386988, 1733735, 2080482, 3467470, 4160964, 5201205, 6934940, 10402410, 20804820]

約数ペア:

[(1, 20804820), (2, 10402410), (3, 6934940), (4, 5201205), (5, 4160964), (6, 3467470), (10, 2080482), (12, 1733735), (15, 1386988), (20, 1040241), (30, 693494), (60, 346747), (137, 151860), (274, 75930), (411, 50620), (548, 37965), (685, 30372), (822, 25310), (1370, 15186), (1644, 12655), (2055, 10124), (2531, 8220), (2740, 7593), (4110, 5062)]