28521405

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{367}}^1$

素因数の和:546

約数の個数: 48

約数和(自身を含む): 54422784

約数和(自身を除く): 25901379

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 157, 165, 367, 471, 495, 785, 1101, 1413, 1727, 1835, 2355, 3303, 4037, 5181, 5505, 7065, 8635, 12111, 15543, 16515, 20185, 25905, 36333, 57619, 60555, 77715, 172857, 181665, 288095, 518571, 633809, 864285, 1901427, 2592855, 3169045, 5704281, 9507135, 28521405]

約数ペア:

[(1, 28521405), (3, 9507135), (5, 5704281), (9, 3169045), (11, 2592855), (15, 1901427), (33, 864285), (45, 633809), (55, 518571), (99, 288095), (157, 181665), (165, 172857), (367, 77715), (471, 60555), (495, 57619), (785, 36333), (1101, 25905), (1413, 20185), (1727, 16515), (1835, 15543), (2355, 12111), (3303, 8635), (4037, 7065), (5181, 5505)]