20710361780

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{691}}^1\times {\mathrm{7607}}^1$

素因数の和:8504

約数の個数: 48

約数和(自身を含む): 43781544576

約数和(自身を除く): 23071182796

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 691, 788, 985, 1382, 1970, 2764, 3455, 3940, 6910, 7607, 13820, 15214, 30428, 38035, 76070, 136127, 152140, 272254, 544508, 680635, 1361270, 1498579, 2722540, 2997158, 5256437, 5994316, 7492895, 10512874, 14985790, 21025748, 26282185, 29971580, 52564370, 105128740, 1035518089, 2071036178, 4142072356, 5177590445, 10355180890, 20710361780]

約数ペア:

[(1, 20710361780), (2, 10355180890), (4, 5177590445), (5, 4142072356), (10, 2071036178), (20, 1035518089), (197, 105128740), (394, 52564370), (691, 29971580), (788, 26282185), (985, 21025748), (1382, 14985790), (1970, 10512874), (2764, 7492895), (3455, 5994316), (3940, 5256437), (6910, 2997158), (7607, 2722540), (13820, 1498579), (15214, 1361270), (30428, 680635), (38035, 544508), (76070, 272254), (136127, 152140)]