257728978

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{319763}}^1$

素因数の和:319809

約数の個数: 16

約数和(自身を含む): 429762816

約数和(自身を除く): 172033838

約数列:

[1, 2, 13, 26, 31, 62, 403, 806, 319763, 639526, 4156919, 8313838, 9912653, 19825306, 128864489, 257728978]

約数ペア:

[(1, 257728978), (2, 128864489), (13, 19825306), (26, 9912653), (31, 8313838), (62, 4156919), (403, 639526), (806, 319763)]