638442

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{563}}^1$

素因数の和:584

約数の個数: 40

約数和(自身を含む): 1637856

約数和(自身を除く): 999414

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 378, 563, 567, 1126, 1134, 1689, 3378, 3941, 5067, 7882, 10134, 11823, 15201, 23646, 30402, 35469, 45603, 70938, 91206, 106407, 212814, 319221, 638442]

約数ペア:

[(1, 638442), (2, 319221), (3, 212814), (6, 106407), (7, 91206), (9, 70938), (14, 45603), (18, 35469), (21, 30402), (27, 23646), (42, 15201), (54, 11823), (63, 10134), (81, 7882), (126, 5067), (162, 3941), (189, 3378), (378, 1689), (563, 1134), (567, 1126)]