19912137

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{419}}^1$

素因数の和:533

約数の個数: 32

約数和(自身を含む): 31825920

約数和(自身を除く): 11913783

約数列:

[1, 3, 7, 21, 31, 73, 93, 217, 219, 419, 511, 651, 1257, 1533, 2263, 2933, 6789, 8799, 12989, 15841, 30587, 38967, 47523, 90923, 91761, 214109, 272769, 642327, 948197, 2844591, 6637379, 19912137]

約数ペア:

[(1, 19912137), (3, 6637379), (7, 2844591), (21, 948197), (31, 642327), (73, 272769), (93, 214109), (217, 91761), (219, 90923), (419, 47523), (511, 38967), (651, 30587), (1257, 15841), (1533, 12989), (2263, 8799), (2933, 6789)]