28087780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{28661}}^1$

素因数の和:28684

約数の個数: 36

約数和(自身を含む): 68616828

約数和(自身を除く): 40529048

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 28661, 57322, 114644, 143305, 200627, 286610, 401254, 573220, 802508, 1003135, 1404389, 2006270, 2808778, 4012540, 5617556, 7021945, 14043890, 28087780]

約数ペア:

[(1, 28087780), (2, 14043890), (4, 7021945), (5, 5617556), (7, 4012540), (10, 2808778), (14, 2006270), (20, 1404389), (28, 1003135), (35, 802508), (49, 573220), (70, 401254), (98, 286610), (140, 200627), (196, 143305), (245, 114644), (490, 57322), (980, 28661)]