25521769

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{509}}^1$

素因数の和:577

約数の個数: 32

約数和(自身を含む): 34272000

約数和(自身を除く): 8750231

約数列:

[1, 7, 13, 19, 29, 91, 133, 203, 247, 377, 509, 551, 1729, 2639, 3563, 3857, 6617, 7163, 9671, 14761, 46319, 50141, 67697, 103327, 125723, 191893, 280459, 880061, 1343251, 1963213, 3645967, 25521769]

約数ペア:

[(1, 25521769), (7, 3645967), (13, 1963213), (19, 1343251), (29, 880061), (91, 280459), (133, 191893), (203, 125723), (247, 103327), (377, 67697), (509, 50141), (551, 46319), (1729, 14761), (2639, 9671), (3563, 7163), (3857, 6617)]