79998400

素因数分解:

$2^6\times 5^2\times {\mathrm{49999}}^1$

素因数の和:50021

約数の個数: 42

約数和(自身を含む): 196850000

約数和(自身を除く): 116851600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 49999, 99998, 199996, 249995, 399992, 499990, 799984, 999980, 1249975, 1599968, 1999960, 2499950, 3199936, 3999920, 4999900, 7999840, 9999800, 15999680, 19999600, 39999200, 79998400]

約数ペア:

[(1, 79998400), (2, 39999200), (4, 19999600), (5, 15999680), (8, 9999800), (10, 7999840), (16, 4999900), (20, 3999920), (25, 3199936), (32, 2499950), (40, 1999960), (50, 1599968), (64, 1249975), (80, 999980), (100, 799984), (160, 499990), (200, 399992), (320, 249995), (400, 199996), (800, 99998), (1600, 49999)]