20502890

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{919}}^1$

素因数の和:1046

約数の個数: 32

約数和(自身を含む): 38949120

約数和(自身を除く): 18446230

約数列:

[1, 2, 5, 10, 23, 46, 97, 115, 194, 230, 485, 919, 970, 1838, 2231, 4462, 4595, 9190, 11155, 21137, 22310, 42274, 89143, 105685, 178286, 211370, 445715, 891430, 2050289, 4100578, 10251445, 20502890]

約数ペア:

[(1, 20502890), (2, 10251445), (5, 4100578), (10, 2050289), (23, 891430), (46, 445715), (97, 211370), (115, 178286), (194, 105685), (230, 89143), (485, 42274), (919, 22310), (970, 21137), (1838, 11155), (2231, 9190), (4462, 4595)]