20636216

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{251}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 39916800

約数和(自身を除く): 19280584

約数列:

[1, 2, 4, 8, 43, 86, 172, 239, 251, 344, 478, 502, 956, 1004, 1912, 2008, 10277, 10793, 20554, 21586, 41108, 43172, 59989, 82216, 86344, 119978, 239956, 479912, 2579527, 5159054, 10318108, 20636216]

約数ペア:

[(1, 20636216), (2, 10318108), (4, 5159054), (8, 2579527), (43, 479912), (86, 239956), (172, 119978), (239, 86344), (251, 82216), (344, 59989), (478, 43172), (502, 41108), (956, 21586), (1004, 20554), (1912, 10793), (2008, 10277)]