28826210

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{661}}^1$

素因数の和:771

約数の個数: 48

約数和(自身を含む): 61129080

約数和(自身を除く): 32302870

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 89, 98, 178, 245, 445, 490, 623, 661, 890, 1246, 1322, 3115, 3305, 4361, 4627, 6230, 6610, 8722, 9254, 21805, 23135, 32389, 43610, 46270, 58829, 64778, 117658, 161945, 294145, 323890, 411803, 588290, 823606, 2059015, 2882621, 4118030, 5765242, 14413105, 28826210]

約数ペア:

[(1, 28826210), (2, 14413105), (5, 5765242), (7, 4118030), (10, 2882621), (14, 2059015), (35, 823606), (49, 588290), (70, 411803), (89, 323890), (98, 294145), (178, 161945), (245, 117658), (445, 64778), (490, 58829), (623, 46270), (661, 43610), (890, 32389), (1246, 23135), (1322, 21805), (3115, 9254), (3305, 8722), (4361, 6610), (4627, 6230)]