21038930

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{991}}^1$

素因数の和:1202

約数の個数: 32

約数和(自身を含む): 41568768

約数和(自身を除く): 20529838

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 193, 386, 965, 991, 1930, 1982, 2123, 4246, 4955, 9910, 10615, 10901, 21230, 21802, 54505, 109010, 191263, 382526, 956315, 1912630, 2103893, 4207786, 10519465, 21038930]

約数ペア:

[(1, 21038930), (2, 10519465), (5, 4207786), (10, 2103893), (11, 1912630), (22, 956315), (55, 382526), (110, 191263), (193, 109010), (386, 54505), (965, 21802), (991, 21230), (1930, 10901), (1982, 10615), (2123, 9910), (4246, 4955)]