20639157

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1901}}^1$

素因数の和:1969

約数の個数: 32

約数和(自身を含む): 35057664

約数和(自身を除く): 14418507

約数列:

[1, 3, 7, 11, 21, 33, 47, 77, 141, 231, 329, 517, 987, 1551, 1901, 3619, 5703, 10857, 13307, 20911, 39921, 62733, 89347, 146377, 268041, 439131, 625429, 982817, 1876287, 2948451, 6879719, 20639157]

約数ペア:

[(1, 20639157), (3, 6879719), (7, 2948451), (11, 1876287), (21, 982817), (33, 625429), (47, 439131), (77, 268041), (141, 146377), (231, 89347), (329, 62733), (517, 39921), (987, 20911), (1551, 13307), (1901, 10857), (3619, 5703)]