19773500

素因数分解:

$2^2\times 5^3\times {\mathrm{71}}^1\times {\mathrm{557}}^1$

素因数の和:647

約数の個数: 48

約数和(自身を含む): 43872192

約数和(自身を除く): 24098692

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 125, 142, 250, 284, 355, 500, 557, 710, 1114, 1420, 1775, 2228, 2785, 3550, 5570, 7100, 8875, 11140, 13925, 17750, 27850, 35500, 39547, 55700, 69625, 79094, 139250, 158188, 197735, 278500, 395470, 790940, 988675, 1977350, 3954700, 4943375, 9886750, 19773500]

約数ペア:

[(1, 19773500), (2, 9886750), (4, 4943375), (5, 3954700), (10, 1977350), (20, 988675), (25, 790940), (50, 395470), (71, 278500), (100, 197735), (125, 158188), (142, 139250), (250, 79094), (284, 69625), (355, 55700), (500, 39547), (557, 35500), (710, 27850), (1114, 17750), (1420, 13925), (1775, 11140), (2228, 8875), (2785, 7100), (3550, 5570)]