20415927

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{983}}^1$

素因数の和:1059

約数の個数: 32

約数和(自身を含む): 33251328

約数和(自身を除く): 12835401

約数列:

[1, 3, 7, 21, 23, 43, 69, 129, 161, 301, 483, 903, 983, 989, 2949, 2967, 6881, 6923, 20643, 20769, 22609, 42269, 67827, 126807, 158263, 295883, 474789, 887649, 972187, 2916561, 6805309, 20415927]

約数ペア:

[(1, 20415927), (3, 6805309), (7, 2916561), (21, 972187), (23, 887649), (43, 474789), (69, 295883), (129, 158263), (161, 126807), (301, 67827), (483, 42269), (903, 22609), (983, 20769), (989, 20643), (2949, 6923), (2967, 6881)]