19964336

素因数分解:

$2^4\times 7^1\times {\mathrm{397}}^1\times {\mathrm{449}}^1$

素因数の和:861

約数の個数: 40

約数和(自身を含む): 44416800

約数和(自身を除く): 24452464

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 397, 449, 794, 898, 1588, 1796, 2779, 3143, 3176, 3592, 5558, 6286, 6352, 7184, 11116, 12572, 22232, 25144, 44464, 50288, 178253, 356506, 713012, 1247771, 1426024, 2495542, 2852048, 4991084, 9982168, 19964336]

約数ペア:

[(1, 19964336), (2, 9982168), (4, 4991084), (7, 2852048), (8, 2495542), (14, 1426024), (16, 1247771), (28, 713012), (56, 356506), (112, 178253), (397, 50288), (449, 44464), (794, 25144), (898, 22232), (1588, 12572), (1796, 11116), (2779, 7184), (3143, 6352), (3176, 6286), (3592, 5558)]