18690784

素因数分解:

$2^5\times 7^1\times {\mathrm{181}}^1\times {\mathrm{461}}^1$

素因数の和:659

約数の個数: 48

約数和(自身を含む): 42378336

約数和(自身を除く): 23687552

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 181, 224, 362, 461, 724, 922, 1267, 1448, 1844, 2534, 2896, 3227, 3688, 5068, 5792, 6454, 7376, 10136, 12908, 14752, 20272, 25816, 40544, 51632, 83441, 103264, 166882, 333764, 584087, 667528, 1168174, 1335056, 2336348, 2670112, 4672696, 9345392, 18690784]

約数ペア:

[(1, 18690784), (2, 9345392), (4, 4672696), (7, 2670112), (8, 2336348), (14, 1335056), (16, 1168174), (28, 667528), (32, 584087), (56, 333764), (112, 166882), (181, 103264), (224, 83441), (362, 51632), (461, 40544), (724, 25816), (922, 20272), (1267, 14752), (1448, 12908), (1844, 10136), (2534, 7376), (2896, 6454), (3227, 5792), (3688, 5068)]