128577981

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{509}}^1\times {\mathrm{523}}^1$

素因数の和:1065

約数の個数: 32

約数和(自身を含む): 205240320

約数和(自身を除く): 76662339

約数列:

[1, 3, 7, 21, 23, 69, 161, 483, 509, 523, 1527, 1569, 3563, 3661, 10689, 10983, 11707, 12029, 35121, 36087, 81949, 84203, 245847, 252609, 266207, 798621, 1863449, 5590347, 6122761, 18368283, 42859327, 128577981]

約数ペア:

[(1, 128577981), (3, 42859327), (7, 18368283), (21, 6122761), (23, 5590347), (69, 1863449), (161, 798621), (483, 266207), (509, 252609), (523, 245847), (1527, 84203), (1569, 81949), (3563, 36087), (3661, 35121), (10689, 12029), (10983, 11707)]