20156987193

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{179}}^1\times {\mathrm{5171}}^1$

素因数の和:5438

約数の個数: 64

約数和(自身を含む): 33246443520

約数和(自身を除く): 13089456327

約数列:

[1, 3, 7, 17, 21, 51, 61, 119, 179, 183, 357, 427, 537, 1037, 1253, 1281, 3043, 3111, 3759, 5171, 7259, 9129, 10919, 15513, 21301, 21777, 32757, 36197, 63903, 76433, 87907, 108591, 185623, 229299, 263721, 315431, 556869, 615349, 925609, 946293, 1299361, 1846047, 2208017, 2776827, 3898083, 5362327, 6479263, 6624051, 15735353, 16086981, 19437789, 37536289, 47206059, 56462149, 110147471, 112608867, 169386447, 330442413, 395235043, 959856533, 1185705129, 2879569599, 6718995731, 20156987193]

約数ペア:

[(1, 20156987193), (3, 6718995731), (7, 2879569599), (17, 1185705129), (21, 959856533), (51, 395235043), (61, 330442413), (119, 169386447), (179, 112608867), (183, 110147471), (357, 56462149), (427, 47206059), (537, 37536289), (1037, 19437789), (1253, 16086981), (1281, 15735353), (3043, 6624051), (3111, 6479263), (3759, 5362327), (5171, 3898083), (7259, 2776827), (9129, 2208017), (10919, 1846047), (15513, 1299361), (21301, 946293), (21777, 925609), (32757, 615349), (36197, 556869), (63903, 315431), (76433, 263721), (87907, 229299), (108591, 185623)]