28855960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{401}}^1$

素因数の和:676

約数の個数: 64

約数和(自身を含む): 74675520

約数和(自身を除く): 45819560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 257, 280, 401, 514, 802, 1028, 1285, 1604, 1799, 2005, 2056, 2570, 2807, 3208, 3598, 4010, 5140, 5614, 7196, 8020, 8995, 10280, 11228, 14035, 14392, 16040, 17990, 22456, 28070, 35980, 56140, 71960, 103057, 112280, 206114, 412228, 515285, 721399, 824456, 1030570, 1442798, 2061140, 2885596, 3606995, 4122280, 5771192, 7213990, 14427980, 28855960]

約数ペア:

[(1, 28855960), (2, 14427980), (4, 7213990), (5, 5771192), (7, 4122280), (8, 3606995), (10, 2885596), (14, 2061140), (20, 1442798), (28, 1030570), (35, 824456), (40, 721399), (56, 515285), (70, 412228), (140, 206114), (257, 112280), (280, 103057), (401, 71960), (514, 56140), (802, 35980), (1028, 28070), (1285, 22456), (1604, 17990), (1799, 16040), (2005, 14392), (2056, 14035), (2570, 11228), (2807, 10280), (3208, 8995), (3598, 8020), (4010, 7196), (5140, 5614)]