257427477

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{138179}}^1$

素因数の和:138214

約数の個数: 20

約数和(自身を含む): 401274720

約数和(自身を除く): 143847243

約数列:

[1, 3, 9, 23, 27, 69, 81, 207, 621, 1863, 138179, 414537, 1243611, 3178117, 3730833, 9534351, 11192499, 28603053, 85809159, 257427477]

約数ペア:

[(1, 257427477), (3, 85809159), (9, 28603053), (23, 11192499), (27, 9534351), (69, 3730833), (81, 3178117), (207, 1243611), (621, 414537), (1863, 138179)]