20538650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{349}}^1$

素因数の和:479

約数の個数: 48

約数和(自身を含む): 42184800

約数和(自身を除く): 21646150

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 107, 110, 214, 275, 349, 535, 550, 698, 1070, 1177, 1745, 2354, 2675, 3490, 3839, 5350, 5885, 7678, 8725, 11770, 17450, 19195, 29425, 37343, 38390, 58850, 74686, 95975, 186715, 191950, 373430, 410773, 821546, 933575, 1867150, 2053865, 4107730, 10269325, 20538650]

約数ペア:

[(1, 20538650), (2, 10269325), (5, 4107730), (10, 2053865), (11, 1867150), (22, 933575), (25, 821546), (50, 410773), (55, 373430), (107, 191950), (110, 186715), (214, 95975), (275, 74686), (349, 58850), (535, 38390), (550, 37343), (698, 29425), (1070, 19195), (1177, 17450), (1745, 11770), (2354, 8725), (2675, 7678), (3490, 5885), (3839, 5350)]