19782028

素因数分解:

$2^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{5563}}^1$

素因数の和:5701

約数の個数: 24

約数和(自身を含む): 39882752

約数和(自身を除く): 20100724

約数列:

[1, 2, 4, 7, 14, 28, 127, 254, 508, 889, 1778, 3556, 5563, 11126, 22252, 38941, 77882, 155764, 706501, 1413002, 2826004, 4945507, 9891014, 19782028]

約数ペア:

[(1, 19782028), (2, 9891014), (4, 4945507), (7, 2826004), (14, 1413002), (28, 706501), (127, 155764), (254, 77882), (508, 38941), (889, 22252), (1778, 11126), (3556, 5563)]