20999202

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{13513}}^1$

素因数の和:13562

約数の個数: 32

約数和(自身を含む): 49299072

約数和(自身を除く): 28299870

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 74, 111, 222, 259, 518, 777, 1554, 13513, 27026, 40539, 81078, 94591, 189182, 283773, 499981, 567546, 999962, 1499943, 2999886, 3499867, 6999734, 10499601, 20999202]

約数ペア:

[(1, 20999202), (2, 10499601), (3, 6999734), (6, 3499867), (7, 2999886), (14, 1499943), (21, 999962), (37, 567546), (42, 499981), (74, 283773), (111, 189182), (222, 94591), (259, 81078), (518, 40539), (777, 27026), (1554, 13513)]