20719335

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{353}}^1$

素因数の和:424

約数の個数: 64

約数和(自身を含む): 41868288

約数和(自身を除く): 21148953

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 43, 65, 91, 105, 129, 195, 215, 273, 301, 353, 455, 559, 645, 903, 1059, 1365, 1505, 1677, 1765, 2471, 2795, 3913, 4515, 4589, 5295, 7413, 8385, 11739, 12355, 13767, 15179, 19565, 22945, 32123, 37065, 45537, 58695, 68835, 75895, 96369, 106253, 160615, 197327, 227685, 318759, 481845, 531265, 591981, 986635, 1381289, 1593795, 2959905, 4143867, 6906445, 20719335]

約数ペア:

[(1, 20719335), (3, 6906445), (5, 4143867), (7, 2959905), (13, 1593795), (15, 1381289), (21, 986635), (35, 591981), (39, 531265), (43, 481845), (65, 318759), (91, 227685), (105, 197327), (129, 160615), (195, 106253), (215, 96369), (273, 75895), (301, 68835), (353, 58695), (455, 45537), (559, 37065), (645, 32123), (903, 22945), (1059, 19565), (1365, 15179), (1505, 13767), (1677, 12355), (1765, 11739), (2471, 8385), (2795, 7413), (3913, 5295), (4515, 4589)]