217599680

素因数分解:

$2^6\times 5^1\times {\mathrm{679999}}^1$

素因数の和:680016

約数の個数: 28

約数和(自身を含む): 518160000

約数和(自身を除く): 300560320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 679999, 1359998, 2719996, 3399995, 5439992, 6799990, 10879984, 13599980, 21759968, 27199960, 43519936, 54399920, 108799840, 217599680]

約数ペア:

[(1, 217599680), (2, 108799840), (4, 54399920), (5, 43519936), (8, 27199960), (10, 21759968), (16, 13599980), (20, 10879984), (32, 6799990), (40, 5439992), (64, 3399995), (80, 2719996), (160, 1359998), (320, 679999)]