259353619

素因数分解:

$7^4\times {\mathrm{109}}^1\times {\mathrm{991}}^1$

素因数の和:1128

約数の個数: 20

約数和(自身を含む): 305645120

約数和(自身を除く): 46291501

約数列:

[1, 7, 49, 109, 343, 763, 991, 2401, 5341, 6937, 37387, 48559, 108019, 261709, 339913, 756133, 2379391, 5292931, 37050517, 259353619]

約数ペア:

[(1, 259353619), (7, 37050517), (49, 5292931), (109, 2379391), (343, 756133), (763, 339913), (991, 261709), (2401, 108019), (5341, 48559), (6937, 37387)]