15983825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{263}}^1$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 24748416

約数和(自身を除く): 8764591

約数列:

[1, 5, 11, 13, 17, 25, 55, 65, 85, 143, 187, 221, 263, 275, 325, 425, 715, 935, 1105, 1315, 2431, 2893, 3419, 3575, 4471, 4675, 5525, 6575, 12155, 14465, 17095, 22355, 37609, 49181, 58123, 60775, 72325, 85475, 111775, 188045, 245905, 290615, 639353, 940225, 1229525, 1453075, 3196765, 15983825]

約数ペア:

[(1, 15983825), (5, 3196765), (11, 1453075), (13, 1229525), (17, 940225), (25, 639353), (55, 290615), (65, 245905), (85, 188045), (143, 111775), (187, 85475), (221, 72325), (263, 60775), (275, 58123), (325, 49181), (425, 37609), (715, 22355), (935, 17095), (1105, 14465), (1315, 12155), (2431, 6575), (2893, 5525), (3419, 4675), (3575, 4471)]