20703711

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{2731}}^1$

素因数の和:2779

約数の個数: 24

約数和(自身を含む): 33308544

約数和(自身を除く): 12604833

約数列:

[1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527, 2731, 7581, 8193, 19117, 51889, 57351, 155667, 363223, 985891, 1089669, 2957673, 6901237, 20703711]

約数ペア:

[(1, 20703711), (3, 6901237), (7, 2957673), (19, 1089669), (21, 985891), (57, 363223), (133, 155667), (361, 57351), (399, 51889), (1083, 19117), (2527, 8193), (2731, 7581)]