20784255

素因数分解:

$3^1\times 5^1\times {\mathrm{971}}^1\times {\mathrm{1427}}^1$

素因数の和:2406

約数の個数: 16

約数和(自身を含む): 33312384

約数和(自身を除く): 12528129

約数列:

[1, 3, 5, 15, 971, 1427, 2913, 4281, 4855, 7135, 14565, 21405, 1385617, 4156851, 6928085, 20784255]

約数ペア:

[(1, 20784255), (3, 6928085), (5, 4156851), (15, 1385617), (971, 21405), (1427, 14565), (2913, 7135), (4281, 4855)]