2557457

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1$

素因数の和:141

約数の個数: 24

約数和(自身を含む): 3255840

約数和(自身を除く): 698383

約数列:

[1, 7, 19, 41, 49, 67, 133, 287, 469, 779, 931, 1273, 2009, 2747, 3283, 5453, 8911, 19229, 38171, 52193, 62377, 134603, 365351, 2557457]

約数ペア:

[(1, 2557457), (7, 365351), (19, 134603), (41, 62377), (49, 52193), (67, 38171), (133, 19229), (287, 8911), (469, 5453), (779, 3283), (931, 2747), (1273, 2009)]