21254996

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{39953}}^1$

素因数の和:39983

約数の個数: 24

約数和(自身を含む): 44748480

約数和(自身を除く): 23493484

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 39953, 79906, 159812, 279671, 559342, 759107, 1118684, 1518214, 3036428, 5313749, 10627498, 21254996]

約数ペア:

[(1, 21254996), (2, 10627498), (4, 5313749), (7, 3036428), (14, 1518214), (19, 1118684), (28, 759107), (38, 559342), (76, 279671), (133, 159812), (266, 79906), (532, 39953)]