20781617738

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2003}}^1\times {\mathrm{12149}}^1$

素因数の和:14222

約数の個数: 32

約数和(自身を含む): 36230716800

約数和(自身を除く): 15449099062

約数列:

[1, 2, 7, 14, 61, 122, 427, 854, 2003, 4006, 12149, 14021, 24298, 28042, 85043, 122183, 170086, 244366, 741089, 855281, 1482178, 1710562, 5187623, 10375246, 24334447, 48668894, 170341129, 340682258, 1484401267, 2968802534, 10390808869, 20781617738]

約数ペア:

[(1, 20781617738), (2, 10390808869), (7, 2968802534), (14, 1484401267), (61, 340682258), (122, 170341129), (427, 48668894), (854, 24334447), (2003, 10375246), (4006, 5187623), (12149, 1710562), (14021, 1482178), (24298, 855281), (28042, 741089), (85043, 244366), (122183, 170086)]