257897128

素因数分解:

$2^3\times {\mathrm{151}}^1\times {\mathrm{213491}}^1$

素因数の和:213648

約数の個数: 16

約数和(自身を含む): 486761760

約数和(自身を除く): 228864632

約数列:

[1, 2, 4, 8, 151, 302, 604, 1208, 213491, 426982, 853964, 1707928, 32237141, 64474282, 128948564, 257897128]

約数ペア:

[(1, 257897128), (2, 128948564), (4, 64474282), (8, 32237141), (151, 1707928), (302, 853964), (604, 426982), (1208, 213491)]