20965305

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{907}}^1$

素因数の和:1005

約数の個数: 32

約数和(自身を含む): 35564544

約数和(自身を除く): 14599239

約数列:

[1, 3, 5, 15, 23, 67, 69, 115, 201, 335, 345, 907, 1005, 1541, 2721, 4535, 4623, 7705, 13605, 20861, 23115, 60769, 62583, 104305, 182307, 303845, 312915, 911535, 1397687, 4193061, 6988435, 20965305]

約数ペア:

[(1, 20965305), (3, 6988435), (5, 4193061), (15, 1397687), (23, 911535), (67, 312915), (69, 303845), (115, 182307), (201, 104305), (335, 62583), (345, 60769), (907, 23115), (1005, 20861), (1541, 13605), (2721, 7705), (4535, 4623)]