15721720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{56149}}^1$

素因数の和:56167

約数の個数: 32

約数和(自身を含む): 40428000

約数和(自身を除く): 24706280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 56149, 112298, 224596, 280745, 393043, 449192, 561490, 786086, 1122980, 1572172, 1965215, 2245960, 3144344, 3930430, 7860860, 15721720]

約数ペア:

[(1, 15721720), (2, 7860860), (4, 3930430), (5, 3144344), (7, 2245960), (8, 1965215), (10, 1572172), (14, 1122980), (20, 786086), (28, 561490), (35, 449192), (40, 393043), (56, 280745), (70, 224596), (140, 112298), (280, 56149)]