20389922

素因数分解:

$2^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{281}}^1$

素因数の和:434

約数の個数: 32

約数和(自身を含む): 36059904

約数和(自身を除く): 15669982

約数列:

[1, 2, 7, 14, 71, 73, 142, 146, 281, 497, 511, 562, 994, 1022, 1967, 3934, 5183, 10366, 19951, 20513, 36281, 39902, 41026, 72562, 139657, 143591, 279314, 287182, 1456423, 2912846, 10194961, 20389922]

約数ペア:

[(1, 20389922), (2, 10194961), (7, 2912846), (14, 1456423), (71, 287182), (73, 279314), (142, 143591), (146, 139657), (281, 72562), (497, 41026), (511, 39902), (562, 36281), (994, 20513), (1022, 19951), (1967, 10366), (3934, 5183)]