81180405

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{48757}}^1$

素因数の和:48805

約数の個数: 24

約数和(自身を含む): 144518712

約数和(自身を除く): 63338307

約数列:

[1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665, 48757, 146271, 243785, 438813, 731355, 1804009, 2194065, 5412027, 9020045, 16236081, 27060135, 81180405]

約数ペア:

[(1, 81180405), (3, 27060135), (5, 16236081), (9, 9020045), (15, 5412027), (37, 2194065), (45, 1804009), (111, 731355), (185, 438813), (333, 243785), (555, 146271), (1665, 48757)]