18689255

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{409}}^1$

素因数の和:483

約数の個数: 32

約数和(自身を含む): 26174400

約数和(自身を除く): 7485145

約数列:

[1, 5, 13, 19, 37, 65, 95, 185, 247, 409, 481, 703, 1235, 2045, 2405, 3515, 5317, 7771, 9139, 15133, 26585, 38855, 45695, 75665, 101023, 196729, 287527, 505115, 983645, 1437635, 3737851, 18689255]

約数ペア:

[(1, 18689255), (5, 3737851), (13, 1437635), (19, 983645), (37, 505115), (65, 287527), (95, 196729), (185, 101023), (247, 75665), (409, 45695), (481, 38855), (703, 26585), (1235, 15133), (2045, 9139), (2405, 7771), (3515, 5317)]