20879469

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{7759}}^1$

素因数の和:7801

約数の個数: 24

約数和(自身を含む): 33895680

約数和(自身を除く): 13016211

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 207, 299, 897, 2691, 7759, 23277, 69831, 100867, 178457, 302601, 535371, 907803, 1606113, 2319941, 6959823, 20879469]

約数ペア:

[(1, 20879469), (3, 6959823), (9, 2319941), (13, 1606113), (23, 907803), (39, 535371), (69, 302601), (117, 178457), (207, 100867), (299, 69831), (897, 23277), (2691, 7759)]