664761295

素因数分解:

$5^1\times {\mathrm{11}}^3\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:205

約数の個数: 64

約数和(自身を含む): 946142208

約数和(自身を除く): 281380913

約数列:

[1, 5, 11, 23, 43, 55, 101, 115, 121, 215, 253, 473, 505, 605, 989, 1111, 1265, 1331, 2323, 2365, 2783, 4343, 4945, 5203, 5555, 6655, 10879, 11615, 12221, 13915, 21715, 25553, 26015, 30613, 47773, 54395, 57233, 61105, 99889, 119669, 127765, 134431, 153065, 238865, 281083, 286165, 499445, 525503, 598345, 672155, 1098779, 1316359, 1405415, 2627515, 3091913, 5493895, 5780533, 6581795, 12086569, 15459565, 28902665, 60432845, 132952259, 664761295]

約数ペア:

[(1, 664761295), (5, 132952259), (11, 60432845), (23, 28902665), (43, 15459565), (55, 12086569), (101, 6581795), (115, 5780533), (121, 5493895), (215, 3091913), (253, 2627515), (473, 1405415), (505, 1316359), (605, 1098779), (989, 672155), (1111, 598345), (1265, 525503), (1331, 499445), (2323, 286165), (2365, 281083), (2783, 238865), (4343, 153065), (4945, 134431), (5203, 127765), (5555, 119669), (6655, 99889), (10879, 61105), (11615, 57233), (12221, 54395), (13915, 47773), (21715, 30613), (25553, 26015)]