18764305

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 28728000

約数和(自身を除く): 9963695

約数列:

[1, 5, 7, 19, 29, 35, 49, 95, 133, 139, 145, 203, 245, 551, 665, 695, 931, 973, 1015, 1421, 2641, 2755, 3857, 4031, 4655, 4865, 6811, 7105, 13205, 18487, 19285, 20155, 26999, 28217, 34055, 76589, 92435, 129409, 134995, 141085, 197519, 382945, 536123, 647045, 987595, 2680615, 3752861, 18764305]

約数ペア:

[(1, 18764305), (5, 3752861), (7, 2680615), (19, 987595), (29, 647045), (35, 536123), (49, 382945), (95, 197519), (133, 141085), (139, 134995), (145, 129409), (203, 92435), (245, 76589), (551, 34055), (665, 28217), (695, 26999), (931, 20155), (973, 19285), (1015, 18487), (1421, 13205), (2641, 7105), (2755, 6811), (3857, 4865), (4031, 4655)]