20757891

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{3907}}^1$

素因数の和:3951

約数の個数: 32

約数和(自身を含む): 36016128

約数和(自身を除く): 15258237

約数列:

[1, 3, 7, 11, 21, 23, 33, 69, 77, 161, 231, 253, 483, 759, 1771, 3907, 5313, 11721, 27349, 42977, 82047, 89861, 128931, 269583, 300839, 629027, 902517, 988471, 1887081, 2965413, 6919297, 20757891]

約数ペア:

[(1, 20757891), (3, 6919297), (7, 2965413), (11, 1887081), (21, 988471), (23, 902517), (33, 629027), (69, 300839), (77, 269583), (161, 128931), (231, 89861), (253, 82047), (483, 42977), (759, 27349), (1771, 11721), (3907, 5313)]