20322981

素因数分解:

$3^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{491}}^1$

素因数の和:583

約数の個数: 40

約数和(自身を含む): 35242944

約数和(自身を除く): 14919963

約数列:

[1, 3, 7, 9, 21, 27, 63, 73, 81, 189, 219, 491, 511, 567, 657, 1473, 1533, 1971, 3437, 4419, 4599, 5913, 10311, 13257, 13797, 30933, 35843, 39771, 41391, 92799, 107529, 250901, 278397, 322587, 752703, 967761, 2258109, 2903283, 6774327, 20322981]

約数ペア:

[(1, 20322981), (3, 6774327), (7, 2903283), (9, 2258109), (21, 967761), (27, 752703), (63, 322587), (73, 278397), (81, 250901), (189, 107529), (219, 92799), (491, 41391), (511, 39771), (567, 35843), (657, 30933), (1473, 13797), (1533, 13257), (1971, 10311), (3437, 5913), (4419, 4599)]