21228284

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{439}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 46717440

約数和(自身を除く): 25489156

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 157, 308, 314, 439, 628, 878, 1099, 1727, 1756, 2198, 3073, 3454, 4396, 4829, 6146, 6908, 9658, 12089, 12292, 19316, 24178, 33803, 48356, 67606, 68923, 135212, 137846, 275692, 482461, 758153, 964922, 1516306, 1929844, 3032612, 5307071, 10614142, 21228284]

約数ペア:

[(1, 21228284), (2, 10614142), (4, 5307071), (7, 3032612), (11, 1929844), (14, 1516306), (22, 964922), (28, 758153), (44, 482461), (77, 275692), (154, 137846), (157, 135212), (308, 68923), (314, 67606), (439, 48356), (628, 33803), (878, 24178), (1099, 19316), (1727, 12292), (1756, 12089), (2198, 9658), (3073, 6908), (3454, 6146), (4396, 4829)]