20597715

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 37346400

約数和(自身を除く): 16748685

約数列:

[1, 3, 5, 9, 15, 37, 45, 89, 111, 139, 185, 267, 333, 417, 445, 555, 695, 801, 1251, 1335, 1665, 2085, 3293, 4005, 5143, 6255, 9879, 12371, 15429, 16465, 25715, 29637, 37113, 46287, 49395, 61855, 77145, 111339, 148185, 185565, 231435, 457727, 556695, 1373181, 2288635, 4119543, 6865905, 20597715]

約数ペア:

[(1, 20597715), (3, 6865905), (5, 4119543), (9, 2288635), (15, 1373181), (37, 556695), (45, 457727), (89, 231435), (111, 185565), (139, 148185), (185, 111339), (267, 77145), (333, 61855), (417, 49395), (445, 46287), (555, 37113), (695, 29637), (801, 25715), (1251, 16465), (1335, 15429), (1665, 12371), (2085, 9879), (3293, 6255), (4005, 5143)]