20981924

素因数分解:

$2^2\times {\mathrm{103}}^1\times {\mathrm{127}}^1\times {\mathrm{401}}^1$

素因数の和:635

約数の個数: 24

約数和(自身を含む): 37459968

約数和(自身を除く): 16478044

約数列:

[1, 2, 4, 103, 127, 206, 254, 401, 412, 508, 802, 1604, 13081, 26162, 41303, 50927, 52324, 82606, 101854, 165212, 203708, 5245481, 10490962, 20981924]

約数ペア:

[(1, 20981924), (2, 10490962), (4, 5245481), (103, 203708), (127, 165212), (206, 101854), (254, 82606), (401, 52324), (412, 50927), (508, 41303), (802, 26162), (1604, 13081)]