19771760

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2447}}^1$

素因数の和:2561

約数の個数: 40

約数和(自身を含む): 46443456

約数和(自身を除く): 26671696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 2447, 4040, 4894, 8080, 9788, 12235, 19576, 24470, 39152, 48940, 97880, 195760, 247147, 494294, 988588, 1235735, 1977176, 2471470, 3954352, 4942940, 9885880, 19771760]

約数ペア:

[(1, 19771760), (2, 9885880), (4, 4942940), (5, 3954352), (8, 2471470), (10, 1977176), (16, 1235735), (20, 988588), (40, 494294), (80, 247147), (101, 195760), (202, 97880), (404, 48940), (505, 39152), (808, 24470), (1010, 19576), (1616, 12235), (2020, 9788), (2447, 8080), (4040, 4894)]