128566520

素因数分解:

$2^3\times 5^1\times {\mathrm{211}}^1\times {\mathrm{15233}}^1$

素因数の和:15455

約数の個数: 32

約数和(自身を含む): 290664720

約数和(自身を除く): 162098200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 211, 422, 844, 1055, 1688, 2110, 4220, 8440, 15233, 30466, 60932, 76165, 121864, 152330, 304660, 609320, 3214163, 6428326, 12856652, 16070815, 25713304, 32141630, 64283260, 128566520]

約数ペア:

[(1, 128566520), (2, 64283260), (4, 32141630), (5, 25713304), (8, 16070815), (10, 12856652), (20, 6428326), (40, 3214163), (211, 609320), (422, 304660), (844, 152330), (1055, 121864), (1688, 76165), (2110, 60932), (4220, 30466), (8440, 15233)]