20985616

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77153}}^1$

素因数の和:77178

約数の個数: 20

約数和(自身を含む): 43051932

約数和(自身を除く): 22066316

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77153, 154306, 308612, 617224, 1234448, 1311601, 2623202, 5246404, 10492808, 20985616]

約数ペア:

[(1, 20985616), (2, 10492808), (4, 5246404), (8, 2623202), (16, 1311601), (17, 1234448), (34, 617224), (68, 308612), (136, 154306), (272, 77153)]