21400428

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{2381}}^1$

素因数の和:2502

約数の個数: 48

約数和(自身を含む): 57625344

約数和(自身を除く): 36224916

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 107, 214, 321, 428, 642, 749, 1284, 1498, 2247, 2381, 2996, 4494, 4762, 7143, 8988, 9524, 14286, 16667, 28572, 33334, 50001, 66668, 100002, 200004, 254767, 509534, 764301, 1019068, 1528602, 1783369, 3057204, 3566738, 5350107, 7133476, 10700214, 21400428]

約数ペア:

[(1, 21400428), (2, 10700214), (3, 7133476), (4, 5350107), (6, 3566738), (7, 3057204), (12, 1783369), (14, 1528602), (21, 1019068), (28, 764301), (42, 509534), (84, 254767), (107, 200004), (214, 100002), (321, 66668), (428, 50001), (642, 33334), (749, 28572), (1284, 16667), (1498, 14286), (2247, 9524), (2381, 8988), (2996, 7143), (4494, 4762)]