20785655877

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{3947}}^1\times {\mathrm{4111}}^1$

素因数の和:8129

約数の個数: 32

約数和(自身を含む): 32208605184

約数和(自身を除く): 11422949307

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 3947, 4111, 11841, 12333, 27629, 28777, 82887, 86331, 240767, 250771, 722301, 752313, 1685369, 1755397, 5056107, 5266191, 16226117, 48678351, 113582819, 340748457, 989793137, 2969379411, 6928551959, 20785655877]

約数ペア:

[(1, 20785655877), (3, 6928551959), (7, 2969379411), (21, 989793137), (61, 340748457), (183, 113582819), (427, 48678351), (1281, 16226117), (3947, 5266191), (4111, 5056107), (11841, 1755397), (12333, 1685369), (27629, 752313), (28777, 722301), (82887, 250771), (86331, 240767)]