28319978

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{389}}^1\times {\mathrm{409}}^1$

素因数の和:889

約数の個数: 16

約数和(自身を含む): 43173000

約数和(自身を除く): 14853022

約数列:

[1, 2, 89, 178, 389, 409, 778, 818, 34621, 36401, 69242, 72802, 159101, 318202, 14159989, 28319978]

約数ペア:

[(1, 28319978), (2, 14159989), (89, 318202), (178, 159101), (389, 72802), (409, 69242), (778, 36401), (818, 34621)]