21251956

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{2311}}^1$

素因数の和:2356

約数の個数: 36

約数和(自身を含む): 43049440

約数和(自身を除く): 21797484

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 121, 209, 242, 418, 484, 836, 2299, 2311, 4598, 4622, 9196, 9244, 25421, 43909, 50842, 87818, 101684, 175636, 279631, 482999, 559262, 965998, 1118524, 1931996, 5312989, 10625978, 21251956]

約数ペア:

[(1, 21251956), (2, 10625978), (4, 5312989), (11, 1931996), (19, 1118524), (22, 965998), (38, 559262), (44, 482999), (76, 279631), (121, 175636), (209, 101684), (242, 87818), (418, 50842), (484, 43909), (836, 25421), (2299, 9244), (2311, 9196), (4598, 4622)]