19910988

素因数分解:

$2^2\times 3^3\times {\mathrm{107}}^1\times {\mathrm{1723}}^1$

素因数の和:1843

約数の個数: 48

約数和(自身を含む): 52133760

約数和(自身を除く): 32222772

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 107, 108, 214, 321, 428, 642, 963, 1284, 1723, 1926, 2889, 3446, 3852, 5169, 5778, 6892, 10338, 11556, 15507, 20676, 31014, 46521, 62028, 93042, 184361, 186084, 368722, 553083, 737444, 1106166, 1659249, 2212332, 3318498, 4977747, 6636996, 9955494, 19910988]

約数ペア:

[(1, 19910988), (2, 9955494), (3, 6636996), (4, 4977747), (6, 3318498), (9, 2212332), (12, 1659249), (18, 1106166), (27, 737444), (36, 553083), (54, 368722), (107, 186084), (108, 184361), (214, 93042), (321, 62028), (428, 46521), (642, 31014), (963, 20676), (1284, 15507), (1723, 11556), (1926, 10338), (2889, 6892), (3446, 5778), (3852, 5169)]