21195832

素因数分解:

$2^3\times 7^2\times {\mathrm{139}}^1\times {\mathrm{389}}^1$

素因数の和:548

約数の個数: 48

約数和(自身を含む): 46683000

約数和(自身を除く): 25487168

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 139, 196, 278, 389, 392, 556, 778, 973, 1112, 1556, 1946, 2723, 3112, 3892, 5446, 6811, 7784, 10892, 13622, 19061, 21784, 27244, 38122, 54071, 54488, 76244, 108142, 152488, 216284, 378497, 432568, 756994, 1513988, 2649479, 3027976, 5298958, 10597916, 21195832]

約数ペア:

[(1, 21195832), (2, 10597916), (4, 5298958), (7, 3027976), (8, 2649479), (14, 1513988), (28, 756994), (49, 432568), (56, 378497), (98, 216284), (139, 152488), (196, 108142), (278, 76244), (389, 54488), (392, 54071), (556, 38122), (778, 27244), (973, 21784), (1112, 19061), (1556, 13622), (1946, 10892), (2723, 7784), (3112, 6811), (3892, 5446)]