51394990

素因数分解:

$2^1\times 5^1\times {\mathrm{643}}^1\times {\mathrm{7993}}^1$

素因数の和:8643

約数の個数: 16

約数和(自身を含む): 92666448

約数和(自身を除く): 41271458

約数列:

[1, 2, 5, 10, 643, 1286, 3215, 6430, 7993, 15986, 39965, 79930, 5139499, 10278998, 25697495, 51394990]

約数ペア:

[(1, 51394990), (2, 25697495), (5, 10278998), (10, 5139499), (643, 79930), (1286, 39965), (3215, 15986), (6430, 7993)]