21748012

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{197}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 45172512

約数和(自身を除く): 23424500

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 193, 197, 286, 386, 394, 572, 772, 788, 2123, 2167, 2509, 2561, 4246, 4334, 5018, 5122, 8492, 8668, 10036, 10244, 27599, 28171, 38021, 55198, 56342, 76042, 110396, 112684, 152084, 418231, 494273, 836462, 988546, 1672924, 1977092, 5437003, 10874006, 21748012]

約数ペア:

[(1, 21748012), (2, 10874006), (4, 5437003), (11, 1977092), (13, 1672924), (22, 988546), (26, 836462), (44, 494273), (52, 418231), (143, 152084), (193, 112684), (197, 110396), (286, 76042), (386, 56342), (394, 55198), (572, 38021), (772, 28171), (788, 27599), (2123, 10244), (2167, 10036), (2509, 8668), (2561, 8492), (4246, 5122), (4334, 5018)]