21468272

素因数分解:

$2^4\times 7^2\times {\mathrm{139}}^1\times {\mathrm{197}}^1$

素因数の和:358

約数の個数: 60

約数和(自身を含む): 48981240

約数和(自身を除く): 27512968

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 139, 196, 197, 278, 392, 394, 556, 784, 788, 973, 1112, 1379, 1576, 1946, 2224, 2758, 3152, 3892, 5516, 6811, 7784, 9653, 11032, 13622, 15568, 19306, 22064, 27244, 27383, 38612, 54488, 54766, 77224, 108976, 109532, 154448, 191681, 219064, 383362, 438128, 766724, 1341767, 1533448, 2683534, 3066896, 5367068, 10734136, 21468272]

約数ペア:

[(1, 21468272), (2, 10734136), (4, 5367068), (7, 3066896), (8, 2683534), (14, 1533448), (16, 1341767), (28, 766724), (49, 438128), (56, 383362), (98, 219064), (112, 191681), (139, 154448), (196, 109532), (197, 108976), (278, 77224), (392, 54766), (394, 54488), (556, 38612), (784, 27383), (788, 27244), (973, 22064), (1112, 19306), (1379, 15568), (1576, 13622), (1946, 11032), (2224, 9653), (2758, 7784), (3152, 6811), (3892, 5516)]