20285104

素因数分解:

$2^4\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1303}}^1$

素因数の和:1457

約数の個数: 40

約数和(自身を含む): 45274880

約数和(自身を除く): 24989776

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 139, 278, 556, 973, 1112, 1303, 1946, 2224, 2606, 3892, 5212, 7784, 9121, 10424, 15568, 18242, 20848, 36484, 72968, 145936, 181117, 362234, 724468, 1267819, 1448936, 2535638, 2897872, 5071276, 10142552, 20285104]

約数ペア:

[(1, 20285104), (2, 10142552), (4, 5071276), (7, 2897872), (8, 2535638), (14, 1448936), (16, 1267819), (28, 724468), (56, 362234), (112, 181117), (139, 145936), (278, 72968), (556, 36484), (973, 20848), (1112, 18242), (1303, 15568), (1946, 10424), (2224, 9121), (2606, 7784), (3892, 5212)]