1640668

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:237

約数の個数: 24

約数和(自身を含む): 2993760

約数和(自身を除く): 1353092

約数列:

[1, 2, 4, 53, 71, 106, 109, 142, 212, 218, 284, 436, 3763, 5777, 7526, 7739, 11554, 15052, 15478, 23108, 30956, 410167, 820334, 1640668]

約数ペア:

[(1, 1640668), (2, 820334), (4, 410167), (53, 30956), (71, 23108), (106, 15478), (109, 15052), (142, 11554), (212, 7739), (218, 7526), (284, 5777), (436, 3763)]