20087860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77261}}^1$

素因数の和:77283

約数の個数: 24

約数和(自身を含む): 45430056

約数和(自身を除く): 25342196

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77261, 154522, 309044, 386305, 772610, 1004393, 1545220, 2008786, 4017572, 5021965, 10043930, 20087860]

約数ペア:

[(1, 20087860), (2, 10043930), (4, 5021965), (5, 4017572), (10, 2008786), (13, 1545220), (20, 1004393), (26, 772610), (52, 386305), (65, 309044), (130, 154522), (260, 77261)]