21784257

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{293}}^1\times {\mathrm{751}}^1$

素因数の和:1061

約数の個数: 24

約数和(自身を含む): 34489728

約数和(自身を除く): 12705471

約数列:

[1, 3, 9, 11, 33, 99, 293, 751, 879, 2253, 2637, 3223, 6759, 8261, 9669, 24783, 29007, 74349, 220043, 660129, 1980387, 2420473, 7261419, 21784257]

約数ペア:

[(1, 21784257), (3, 7261419), (9, 2420473), (11, 1980387), (33, 660129), (99, 220043), (293, 74349), (751, 29007), (879, 24783), (2253, 9669), (2637, 8261), (3223, 6759)]