20340565

素因数分解:

$5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{139}}^1$

素因数の和:301

約数の個数: 32

約数和(自身を含む): 29111040

約数和(自身を除く): 8770475

約数列:

[1, 5, 7, 35, 37, 113, 139, 185, 259, 565, 695, 791, 973, 1295, 3955, 4181, 4865, 5143, 15707, 20905, 25715, 29267, 36001, 78535, 109949, 146335, 180005, 549745, 581159, 2905795, 4068113, 20340565]

約数ペア:

[(1, 20340565), (5, 4068113), (7, 2905795), (35, 581159), (37, 549745), (113, 180005), (139, 146335), (185, 109949), (259, 78535), (565, 36001), (695, 29267), (791, 25715), (973, 20905), (1295, 15707), (3955, 5143), (4181, 4865)]