21497979

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{9803}}^1$

素因数の和:9866

約数の個数: 16

約数和(自身を含む): 31059072

約数和(自身を除く): 9561093

約数列:

[1, 3, 17, 43, 51, 129, 731, 2193, 9803, 29409, 166651, 421529, 499953, 1264587, 7165993, 21497979]

約数ペア:

[(1, 21497979), (3, 7165993), (17, 1264587), (43, 499953), (51, 421529), (129, 166651), (731, 29409), (2193, 9803)]