12978405

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{167}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 24845184

約数和(自身を除く): 11866779

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 157, 165, 167, 471, 495, 501, 785, 835, 1413, 1503, 1727, 1837, 2355, 2505, 5181, 5511, 7065, 7515, 8635, 9185, 15543, 16533, 25905, 26219, 27555, 77715, 78657, 82665, 131095, 235971, 288409, 393285, 865227, 1179855, 1442045, 2595681, 4326135, 12978405]

約数ペア:

[(1, 12978405), (3, 4326135), (5, 2595681), (9, 1442045), (11, 1179855), (15, 865227), (33, 393285), (45, 288409), (55, 235971), (99, 131095), (157, 82665), (165, 78657), (167, 77715), (471, 27555), (495, 26219), (501, 25905), (785, 16533), (835, 15543), (1413, 9185), (1503, 8635), (1727, 7515), (1837, 7065), (2355, 5511), (2505, 5181)]