21280272

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{509}}^1$

素因数の和:600

約数の個数: 80

約数和(自身を含む): 60204480

約数和(自身を除く): 38924208

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 67, 78, 104, 134, 156, 201, 208, 268, 312, 402, 509, 536, 624, 804, 871, 1018, 1072, 1527, 1608, 1742, 2036, 2613, 3054, 3216, 3484, 4072, 5226, 6108, 6617, 6968, 8144, 10452, 12216, 13234, 13936, 19851, 20904, 24432, 26468, 34103, 39702, 41808, 52936, 68206, 79404, 102309, 105872, 136412, 158808, 204618, 272824, 317616, 409236, 443339, 545648, 818472, 886678, 1330017, 1636944, 1773356, 2660034, 3546712, 5320068, 7093424, 10640136, 21280272]

約数ペア:

[(1, 21280272), (2, 10640136), (3, 7093424), (4, 5320068), (6, 3546712), (8, 2660034), (12, 1773356), (13, 1636944), (16, 1330017), (24, 886678), (26, 818472), (39, 545648), (48, 443339), (52, 409236), (67, 317616), (78, 272824), (104, 204618), (134, 158808), (156, 136412), (201, 105872), (208, 102309), (268, 79404), (312, 68206), (402, 52936), (509, 41808), (536, 39702), (624, 34103), (804, 26468), (871, 24432), (1018, 20904), (1072, 19851), (1527, 13936), (1608, 13234), (1742, 12216), (2036, 10452), (2613, 8144), (3054, 6968), (3216, 6617), (3484, 6108), (4072, 5226)]