20154690440

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{1960573}}^1$

素因数の和:1960841

約数の個数: 32

約数和(自身を含む): 45524528280

約数和(自身を除く): 25369837840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 10280, 1960573, 3921146, 7842292, 9802865, 15684584, 19605730, 39211460, 78422920, 503867261, 1007734522, 2015469044, 2519336305, 4030938088, 5038672610, 10077345220, 20154690440]

約数ペア:

[(1, 20154690440), (2, 10077345220), (4, 5038672610), (5, 4030938088), (8, 2519336305), (10, 2015469044), (20, 1007734522), (40, 503867261), (257, 78422920), (514, 39211460), (1028, 19605730), (1285, 15684584), (2056, 9802865), (2570, 7842292), (5140, 3921146), (10280, 1960573)]