257974382

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{907}}^1\times {\mathrm{2003}}^1$

素因数の和:2983

約数の個数: 16

約数和(自身を含む): 393040512

約数和(自身を除く): 135066130

約数列:

[1, 2, 71, 142, 907, 1814, 2003, 4006, 64397, 128794, 142213, 284426, 1816721, 3633442, 128987191, 257974382]

約数ペア:

[(1, 257974382), (2, 128987191), (71, 3633442), (142, 1816721), (907, 284426), (1814, 142213), (2003, 128794), (4006, 64397)]