90528080

素因数分解:

$2^4\times 5^1\times {\mathrm{389}}^1\times {\mathrm{2909}}^1$

素因数の和:3311

約数の個数: 40

約数和(自身を含む): 211091400

約数和(自身を除く): 120563320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389, 778, 1556, 1945, 2909, 3112, 3890, 5818, 6224, 7780, 11636, 14545, 15560, 23272, 29090, 31120, 46544, 58180, 116360, 232720, 1131601, 2263202, 4526404, 5658005, 9052808, 11316010, 18105616, 22632020, 45264040, 90528080]

約数ペア:

[(1, 90528080), (2, 45264040), (4, 22632020), (5, 18105616), (8, 11316010), (10, 9052808), (16, 5658005), (20, 4526404), (40, 2263202), (80, 1131601), (389, 232720), (778, 116360), (1556, 58180), (1945, 46544), (2909, 31120), (3112, 29090), (3890, 23272), (5818, 15560), (6224, 14545), (7780, 11636)]