20605004

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{19889}}^1$

素因数の和:19937

約数の個数: 24

約数和(自身を含む): 42325920

約数和(自身を除く): 21720916

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 148, 259, 518, 1036, 19889, 39778, 79556, 139223, 278446, 556892, 735893, 1471786, 2943572, 5151251, 10302502, 20605004]

約数ペア:

[(1, 20605004), (2, 10302502), (4, 5151251), (7, 2943572), (14, 1471786), (28, 735893), (37, 556892), (74, 278446), (148, 139223), (259, 79556), (518, 39778), (1036, 19889)]