20431215

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1753}}^1$

素因数の和:1808

約数の個数: 48

約数和(自身を含む): 41590848

約数和(自身を除く): 21159633

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 37, 45, 63, 105, 111, 185, 259, 315, 333, 555, 777, 1295, 1665, 1753, 2331, 3885, 5259, 8765, 11655, 12271, 15777, 26295, 36813, 61355, 64861, 78885, 110439, 184065, 194583, 324305, 454027, 552195, 583749, 972915, 1362081, 2270135, 2918745, 4086243, 6810405, 20431215]

約数ペア:

[(1, 20431215), (3, 6810405), (5, 4086243), (7, 2918745), (9, 2270135), (15, 1362081), (21, 972915), (35, 583749), (37, 552195), (45, 454027), (63, 324305), (105, 194583), (111, 184065), (185, 110439), (259, 78885), (315, 64861), (333, 61355), (555, 36813), (777, 26295), (1295, 15777), (1665, 12271), (1753, 11655), (2331, 8765), (3885, 5259)]