19702221

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^2$

素因数の和:174

約数の個数: 48

約数和(自身を含む): 34997760

約数和(自身を除く): 15295539

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 67, 77, 133, 201, 209, 231, 399, 469, 627, 737, 1273, 1407, 1463, 2211, 3819, 4389, 4489, 5159, 8911, 13467, 14003, 15477, 26733, 31423, 42009, 49379, 85291, 94269, 98021, 148137, 255873, 294063, 345653, 597037, 938201, 1036959, 1791111, 2814603, 6567407, 19702221]

約数ペア:

[(1, 19702221), (3, 6567407), (7, 2814603), (11, 1791111), (19, 1036959), (21, 938201), (33, 597037), (57, 345653), (67, 294063), (77, 255873), (133, 148137), (201, 98021), (209, 94269), (231, 85291), (399, 49379), (469, 42009), (627, 31423), (737, 26733), (1273, 15477), (1407, 14003), (1463, 13467), (2211, 8911), (3819, 5159), (4389, 4489)]