28519720

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{2711}}^1$

素因数の和:2985

約数の個数: 32

約数和(自身を含む): 64437120

約数和(自身を除く): 35917400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2104, 2630, 2711, 5260, 5422, 10520, 10844, 13555, 21688, 27110, 54220, 108440, 712993, 1425986, 2851972, 3564965, 5703944, 7129930, 14259860, 28519720]

約数ペア:

[(1, 28519720), (2, 14259860), (4, 7129930), (5, 5703944), (8, 3564965), (10, 2851972), (20, 1425986), (40, 712993), (263, 108440), (526, 54220), (1052, 27110), (1315, 21688), (2104, 13555), (2630, 10844), (2711, 10520), (5260, 5422)]