20505285

素因数分解:

$3^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{787}}^1$

素因数の和:994

約数の個数: 32

約数和(自身を含む): 36689280

約数和(自身を除く): 16183995

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 193, 579, 787, 965, 1737, 2361, 2895, 3935, 5211, 7083, 8685, 11805, 21249, 26055, 35415, 106245, 151891, 455673, 759455, 1367019, 2278365, 4101057, 6835095, 20505285]

約数ペア:

[(1, 20505285), (3, 6835095), (5, 4101057), (9, 2278365), (15, 1367019), (27, 759455), (45, 455673), (135, 151891), (193, 106245), (579, 35415), (787, 26055), (965, 21249), (1737, 11805), (2361, 8685), (2895, 7083), (3935, 5211)]