18897884

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{829}}^1$

素因数の和:1013

約数の個数: 24

約数和(自身を含む): 34162800

約数和(自身を除く): 15264916

約数列:

[1, 2, 4, 41, 82, 139, 164, 278, 556, 829, 1658, 3316, 5699, 11398, 22796, 33989, 67978, 115231, 135956, 230462, 460924, 4724471, 9448942, 18897884]

約数ペア:

[(1, 18897884), (2, 9448942), (4, 4724471), (41, 460924), (82, 230462), (139, 135956), (164, 115231), (278, 67978), (556, 33989), (829, 22796), (1658, 11398), (3316, 5699)]