208979725

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{21379}}^1$

素因数の和:21429

約数の個数: 24

約数和(自身を含む): 286320960

約数和(自身を除く): 77341235

約数列:

[1, 5, 17, 23, 25, 85, 115, 391, 425, 575, 1955, 9775, 21379, 106895, 363443, 491717, 534475, 1817215, 2458585, 8359189, 9086075, 12292925, 41795945, 208979725]

約数ペア:

[(1, 208979725), (5, 41795945), (17, 12292925), (23, 9086075), (25, 8359189), (85, 2458585), (115, 1817215), (391, 534475), (425, 491717), (575, 363443), (1955, 106895), (9775, 21379)]