261789008

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{1258601}}^1$

素因数の和:1258622

約数の個数: 20

約数和(自身を含む): 546233268

約数和(自身を除く): 284444260

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 1258601, 2517202, 5034404, 10068808, 16361813, 20137616, 32723626, 65447252, 130894504, 261789008]

約数ペア:

[(1, 261789008), (2, 130894504), (4, 65447252), (8, 32723626), (13, 20137616), (16, 16361813), (26, 10068808), (52, 5034404), (104, 2517202), (208, 1258601)]