20694850

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{197}}^1$

素因数の和:411

約数の個数: 48

約数和(自身を含む): 42425856

約数和(自身を除く): 21731006

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 191, 197, 275, 382, 394, 550, 955, 985, 1910, 1970, 2101, 2167, 4202, 4334, 4775, 4925, 9550, 9850, 10505, 10835, 21010, 21670, 37627, 52525, 54175, 75254, 105050, 108350, 188135, 376270, 413897, 827794, 940675, 1881350, 2069485, 4138970, 10347425, 20694850]

約数ペア:

[(1, 20694850), (2, 10347425), (5, 4138970), (10, 2069485), (11, 1881350), (22, 940675), (25, 827794), (50, 413897), (55, 376270), (110, 188135), (191, 108350), (197, 105050), (275, 75254), (382, 54175), (394, 52525), (550, 37627), (955, 21670), (985, 21010), (1910, 10835), (1970, 10505), (2101, 9850), (2167, 9550), (4202, 4925), (4334, 4775)]