28209447

素因数分解:

$3^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{1361}}^1$

素因数の和:1428

約数の個数: 36

約数和(自身を含む): 48443616

約数和(自身を除く): 20234169

約数列:

[1, 3, 7, 9, 21, 47, 49, 63, 141, 147, 329, 423, 441, 987, 1361, 2303, 2961, 4083, 6909, 9527, 12249, 20727, 28581, 63967, 66689, 85743, 191901, 200067, 447769, 575703, 600201, 1343307, 3134383, 4029921, 9403149, 28209447]

約数ペア:

[(1, 28209447), (3, 9403149), (7, 4029921), (9, 3134383), (21, 1343307), (47, 600201), (49, 575703), (63, 447769), (141, 200067), (147, 191901), (329, 85743), (423, 66689), (441, 63967), (987, 28581), (1361, 20727), (2303, 12249), (2961, 9527), (4083, 6909)]