261281278

素因数分解:

$2^1\times {\mathrm{71}}^1\times {\mathrm{373}}^1\times {\mathrm{4933}}^1$

素因数の和:5379

約数の個数: 16

約数和(自身を含む): 398588256

約数和(自身を除く): 137306978

約数列:

[1, 2, 71, 142, 373, 746, 4933, 9866, 26483, 52966, 350243, 700486, 1840009, 3680018, 130640639, 261281278]

約数ペア:

[(1, 261281278), (2, 130640639), (71, 3680018), (142, 1840009), (373, 700486), (746, 350243), (4933, 52966), (9866, 26483)]