155719120

素因数分解:

$2^4\times 5^1\times {\mathrm{1946489}}^1$

素因数の和:1946502

約数の個数: 20

約数和(自身を含む): 362047140

約数和(自身を除く): 206328020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1946489, 3892978, 7785956, 9732445, 15571912, 19464890, 31143824, 38929780, 77859560, 155719120]

約数ペア:

[(1, 155719120), (2, 77859560), (4, 38929780), (5, 31143824), (8, 19464890), (10, 15571912), (16, 9732445), (20, 7785956), (40, 3892978), (80, 1946489)]