20808548691

素因数分解:

$3^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{263}}^1\times {\mathrm{12517}}^1$

素因数の和:12840

約数の個数: 48

約数和(自身を含む): 33153272064

約数和(自身を除く): 12344723373

約数列:

[1, 3, 7, 21, 43, 49, 129, 147, 263, 301, 789, 903, 1841, 2107, 5523, 6321, 11309, 12517, 12887, 33927, 37551, 38661, 79163, 87619, 237489, 262857, 538231, 554141, 613333, 1614693, 1662423, 1839999, 3291971, 3767617, 9875913, 11302851, 23043797, 26373319, 69131391, 79119957, 141554753, 161306579, 424664259, 483919737, 990883271, 2972649813, 6936182897, 20808548691]

約数ペア:

[(1, 20808548691), (3, 6936182897), (7, 2972649813), (21, 990883271), (43, 483919737), (49, 424664259), (129, 161306579), (147, 141554753), (263, 79119957), (301, 69131391), (789, 26373319), (903, 23043797), (1841, 11302851), (2107, 9875913), (5523, 3767617), (6321, 3291971), (11309, 1839999), (12517, 1662423), (12887, 1614693), (33927, 613333), (37551, 554141), (38661, 538231), (79163, 262857), (87619, 237489)]