21962157

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{2897}}^1$

素因数の和:2945

約数の個数: 24

約数和(自身を含む): 35332416

約数和(自身を除く): 13370259

約数列:

[1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527, 2897, 7581, 8691, 20279, 55043, 60837, 165129, 385301, 1045817, 1155903, 3137451, 7320719, 21962157]

約数ペア:

[(1, 21962157), (3, 7320719), (7, 3137451), (19, 1155903), (21, 1045817), (57, 385301), (133, 165129), (361, 60837), (399, 55043), (1083, 20279), (2527, 8691), (2897, 7581)]