21281596

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{367}}^1$

素因数の和:506

約数の個数: 48

約数和(自身を含む): 45337600

約数和(自身を除く): 24056004

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 109, 133, 218, 266, 367, 436, 532, 734, 763, 1468, 1526, 2071, 2569, 3052, 4142, 5138, 6973, 8284, 10276, 13946, 14497, 27892, 28994, 40003, 48811, 57988, 80006, 97622, 160012, 195244, 280021, 560042, 760057, 1120084, 1520114, 3040228, 5320399, 10640798, 21281596]

約数ペア:

[(1, 21281596), (2, 10640798), (4, 5320399), (7, 3040228), (14, 1520114), (19, 1120084), (28, 760057), (38, 560042), (76, 280021), (109, 195244), (133, 160012), (218, 97622), (266, 80006), (367, 57988), (436, 48811), (532, 40003), (734, 28994), (763, 27892), (1468, 14497), (1526, 13946), (2071, 10276), (2569, 8284), (3052, 6973), (4142, 5138)]