19709865

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{20857}}^1$

素因数の和:20878

約数の個数: 32

約数和(自身を含む): 40047360

約数和(自身を除く): 20337495

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 20857, 62571, 104285, 145999, 187713, 312855, 437997, 563139, 729995, 938565, 1313991, 2189985, 2815695, 3941973, 6569955, 19709865]

約数ペア:

[(1, 19709865), (3, 6569955), (5, 3941973), (7, 2815695), (9, 2189985), (15, 1313991), (21, 938565), (27, 729995), (35, 563139), (45, 437997), (63, 312855), (105, 187713), (135, 145999), (189, 104285), (315, 62571), (945, 20857)]