19659871

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{653}}^1$

素因数の和:711

約数の個数: 32

約数和(自身を含む): 27122688

約数和(自身を除く): 7462817

約数列:

[1, 7, 11, 17, 23, 77, 119, 161, 187, 253, 391, 653, 1309, 1771, 2737, 4301, 4571, 7183, 11101, 15019, 30107, 50281, 77707, 105133, 122111, 165209, 255323, 854777, 1156463, 1787261, 2808553, 19659871]

約数ペア:

[(1, 19659871), (7, 2808553), (11, 1787261), (17, 1156463), (23, 854777), (77, 255323), (119, 165209), (161, 122111), (187, 105133), (253, 77707), (391, 50281), (653, 30107), (1309, 15019), (1771, 11101), (2737, 7183), (4301, 4571)]