19565566840

素因数分解:

$2^3\times 5^1\times {\mathrm{489139171}}^1$

素因数の和:489139182

約数の個数: 16

約数和(自身を含む): 44022525480

約数和(自身を除く): 24456958640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 489139171, 978278342, 1956556684, 2445695855, 3913113368, 4891391710, 9782783420, 19565566840]

約数ペア:

[(1, 19565566840), (2, 9782783420), (4, 4891391710), (5, 3913113368), (8, 2445695855), (10, 1956556684), (20, 978278342), (40, 489139171)]