20458288

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{389}}^1$

素因数の和:589

約数の個数: 40

約数和(自身を含む): 42073200

約数和(自身を除く): 21614912

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 173, 304, 346, 389, 692, 778, 1384, 1556, 2768, 3112, 3287, 6224, 6574, 7391, 13148, 14782, 26296, 29564, 52592, 59128, 67297, 118256, 134594, 269188, 538376, 1076752, 1278643, 2557286, 5114572, 10229144, 20458288]

約数ペア:

[(1, 20458288), (2, 10229144), (4, 5114572), (8, 2557286), (16, 1278643), (19, 1076752), (38, 538376), (76, 269188), (152, 134594), (173, 118256), (304, 67297), (346, 59128), (389, 52592), (692, 29564), (778, 26296), (1384, 14782), (1556, 13148), (2768, 7391), (3112, 6574), (3287, 6224)]