81535780

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{27361}}^1$

素因数の和:27519

約数の個数: 24

約数和(自身を含む): 172380600

約数和(自身を除く): 90844820

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 27361, 54722, 109444, 136805, 273610, 547220, 4076789, 8153578, 16307156, 20383945, 40767890, 81535780]

約数ペア:

[(1, 81535780), (2, 40767890), (4, 20383945), (5, 16307156), (10, 8153578), (20, 4076789), (149, 547220), (298, 273610), (596, 136805), (745, 109444), (1490, 54722), (2980, 27361)]