78721040

素因数分解:

$2^4\times 5^1\times {\mathrm{229}}^1\times {\mathrm{4297}}^1$

素因数の和:4539

約数の個数: 40

約数和(自身を含む): 183868440

約数和(自身を除く): 105147400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 229, 458, 916, 1145, 1832, 2290, 3664, 4297, 4580, 8594, 9160, 17188, 18320, 21485, 34376, 42970, 68752, 85940, 171880, 343760, 984013, 1968026, 3936052, 4920065, 7872104, 9840130, 15744208, 19680260, 39360520, 78721040]

約数ペア:

[(1, 78721040), (2, 39360520), (4, 19680260), (5, 15744208), (8, 9840130), (10, 7872104), (16, 4920065), (20, 3936052), (40, 1968026), (80, 984013), (229, 343760), (458, 171880), (916, 85940), (1145, 68752), (1832, 42970), (2290, 34376), (3664, 21485), (4297, 18320), (4580, 17188), (8594, 9160)]