18003280

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1619}}^1$

素因数の和:1771

約数の個数: 40

約数和(自身を含む): 42184800

約数和(自身を除く): 24181520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 1619, 2224, 2780, 3238, 5560, 6476, 8095, 11120, 12952, 16190, 25904, 32380, 64760, 129520, 225041, 450082, 900164, 1125205, 1800328, 2250410, 3600656, 4500820, 9001640, 18003280]

約数ペア:

[(1, 18003280), (2, 9001640), (4, 4500820), (5, 3600656), (8, 2250410), (10, 1800328), (16, 1125205), (20, 900164), (40, 450082), (80, 225041), (139, 129520), (278, 64760), (556, 32380), (695, 25904), (1112, 16190), (1390, 12952), (1619, 11120), (2224, 8095), (2780, 6476), (3238, 5560)]