20509208

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{7937}}^1$

素因数の和:7979

約数の個数: 32

約数和(自身を含む): 42865200

約数和(自身を除く): 22355992

約数列:

[1, 2, 4, 8, 17, 19, 34, 38, 68, 76, 136, 152, 323, 646, 1292, 2584, 7937, 15874, 31748, 63496, 134929, 150803, 269858, 301606, 539716, 603212, 1079432, 1206424, 2563651, 5127302, 10254604, 20509208]

約数ペア:

[(1, 20509208), (2, 10254604), (4, 5127302), (8, 2563651), (17, 1206424), (19, 1079432), (34, 603212), (38, 539716), (68, 301606), (76, 269858), (136, 150803), (152, 134929), (323, 63496), (646, 31748), (1292, 15874), (2584, 7937)]