20001775

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2477}}^1$

素因数の和:2523

約数の個数: 24

約数和(自身を含む): 27654480

約数和(自身を除く): 7652705

約数列:

[1, 5, 17, 19, 25, 85, 95, 323, 425, 475, 1615, 2477, 8075, 12385, 42109, 47063, 61925, 210545, 235315, 800071, 1052725, 1176575, 4000355, 20001775]

約数ペア:

[(1, 20001775), (5, 4000355), (17, 1176575), (19, 1052725), (25, 800071), (85, 235315), (95, 210545), (323, 61925), (425, 47063), (475, 42109), (1615, 12385), (2477, 8075)]