261180580

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{107}}^1\times {\mathrm{127}}^1$

素因数の和:305

約数の個数: 72

約数和(自身を含む): 576543744

約数和(自身を除く): 315363164

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 107, 124, 127, 155, 214, 254, 310, 428, 508, 535, 620, 635, 961, 1070, 1270, 1922, 2140, 2540, 3317, 3844, 3937, 4805, 6634, 7874, 9610, 13268, 13589, 15748, 16585, 19220, 19685, 27178, 33170, 39370, 54356, 66340, 67945, 78740, 102827, 122047, 135890, 205654, 244094, 271780, 411308, 421259, 488188, 514135, 610235, 842518, 1028270, 1220470, 1685036, 2056540, 2106295, 2440940, 4212590, 8425180, 13059029, 26118058, 52236116, 65295145, 130590290, 261180580]

約数ペア:

[(1, 261180580), (2, 130590290), (4, 65295145), (5, 52236116), (10, 26118058), (20, 13059029), (31, 8425180), (62, 4212590), (107, 2440940), (124, 2106295), (127, 2056540), (155, 1685036), (214, 1220470), (254, 1028270), (310, 842518), (428, 610235), (508, 514135), (535, 488188), (620, 421259), (635, 411308), (961, 271780), (1070, 244094), (1270, 205654), (1922, 135890), (2140, 122047), (2540, 102827), (3317, 78740), (3844, 67945), (3937, 66340), (4805, 54356), (6634, 39370), (7874, 33170), (9610, 27178), (13268, 19685), (13589, 19220), (15748, 16585)]