17998156940

素因数分解:

$2^2\times 5^1\times {\mathrm{2143}}^1\times {\mathrm{419929}}^1$

素因数の和:422081

約数の個数: 24

約数和(自身を含む): 37813856640

約数和(自身を除く): 19815699700

約数列:

[1, 2, 4, 5, 10, 20, 2143, 4286, 8572, 10715, 21430, 42860, 419929, 839858, 1679716, 2099645, 4199290, 8398580, 899907847, 1799815694, 3599631388, 4499539235, 8999078470, 17998156940]

約数ペア:

[(1, 17998156940), (2, 8999078470), (4, 4499539235), (5, 3599631388), (10, 1799815694), (20, 899907847), (2143, 8398580), (4286, 4199290), (8572, 2099645), (10715, 1679716), (21430, 839858), (42860, 419929)]