81535480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{156799}}^1$

素因数の和:156823

約数の個数: 32

約数和(自身を含む): 197568000

約数和(自身を除く): 116032520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 156799, 313598, 627196, 783995, 1254392, 1567990, 2038387, 3135980, 4076774, 6271960, 8153548, 10191935, 16307096, 20383870, 40767740, 81535480]

約数ペア:

[(1, 81535480), (2, 40767740), (4, 20383870), (5, 16307096), (8, 10191935), (10, 8153548), (13, 6271960), (20, 4076774), (26, 3135980), (40, 2038387), (52, 1567990), (65, 1254392), (104, 783995), (130, 627196), (260, 313598), (520, 156799)]