205260080

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{23539}}^1$

素因数の和:23661

約数の個数: 40

約数和(自身を含む): 481628400

約数和(自身を除く): 276368320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8720, 23539, 47078, 94156, 117695, 188312, 235390, 376624, 470780, 941560, 1883120, 2565751, 5131502, 10263004, 12828755, 20526008, 25657510, 41052016, 51315020, 102630040, 205260080]

約数ペア:

[(1, 205260080), (2, 102630040), (4, 51315020), (5, 41052016), (8, 25657510), (10, 20526008), (16, 12828755), (20, 10263004), (40, 5131502), (80, 2565751), (109, 1883120), (218, 941560), (436, 470780), (545, 376624), (872, 235390), (1090, 188312), (1744, 117695), (2180, 94156), (4360, 47078), (8720, 23539)]