19700919

素因数分解:

$3^2\times 7^1\times {\mathrm{179}}^1\times {\mathrm{1747}}^1$

素因数の和:1939

約数の個数: 24

約数和(自身を含む): 32722560

約数和(自身を除く): 13021641

約数列:

[1, 3, 7, 9, 21, 63, 179, 537, 1253, 1611, 1747, 3759, 5241, 11277, 12229, 15723, 36687, 110061, 312713, 938139, 2188991, 2814417, 6566973, 19700919]

約数ペア:

[(1, 19700919), (3, 6566973), (7, 2814417), (9, 2188991), (21, 938139), (63, 312713), (179, 110061), (537, 36687), (1253, 15723), (1611, 12229), (1747, 11277), (3759, 5241)]