21945807

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{1753}}^1$

素因数の和:1879

約数の個数: 24

約数和(自身を含む): 34476624

約数和(自身を除く): 12530817

約数列:

[1, 3, 9, 13, 39, 107, 117, 321, 963, 1391, 1753, 4173, 5259, 12519, 15777, 22789, 68367, 187571, 205101, 562713, 1688139, 2438423, 7315269, 21945807]

約数ペア:

[(1, 21945807), (3, 7315269), (9, 2438423), (13, 1688139), (39, 562713), (107, 205101), (117, 187571), (321, 68367), (963, 22789), (1391, 15777), (1753, 12519), (4173, 5259)]