20618596

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{257}}^1\times {\mathrm{647}}^1$

素因数の和:939

約数の個数: 24

約数和(自身を含む): 37449216

約数和(自身を除く): 16830620

約数列:

[1, 2, 4, 31, 62, 124, 257, 514, 647, 1028, 1294, 2588, 7967, 15934, 20057, 31868, 40114, 80228, 166279, 332558, 665116, 5154649, 10309298, 20618596]

約数ペア:

[(1, 20618596), (2, 10309298), (4, 5154649), (31, 665116), (62, 332558), (124, 166279), (257, 80228), (514, 40114), (647, 31868), (1028, 20057), (1294, 15934), (2588, 7967)]