20959990

素因数分解:

$2^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{25253}}^1$

素因数の和:25343

約数の個数: 16

約数和(自身を含む): 38184048

約数和(自身を除く): 17224058

約数列:

[1, 2, 5, 10, 83, 166, 415, 830, 25253, 50506, 126265, 252530, 2095999, 4191998, 10479995, 20959990]

約数ペア:

[(1, 20959990), (2, 10479995), (5, 4191998), (10, 2095999), (83, 252530), (166, 126265), (415, 50506), (830, 25253)]