20752905

素因数分解:

$3^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{211}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 34191360

約数和(自身を除く): 13438455

約数列:

[1, 3, 5, 15, 79, 83, 211, 237, 249, 395, 415, 633, 1055, 1185, 1245, 3165, 6557, 16669, 17513, 19671, 32785, 50007, 52539, 83345, 87565, 98355, 250035, 262695, 1383527, 4150581, 6917635, 20752905]

約数ペア:

[(1, 20752905), (3, 6917635), (5, 4150581), (15, 1383527), (79, 262695), (83, 250035), (211, 98355), (237, 87565), (249, 83345), (395, 52539), (415, 50007), (633, 32785), (1055, 19671), (1185, 17513), (1245, 16669), (3165, 6557)]