181330520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{647609}}^1$

素因数の和:647627

約数の個数: 32

約数和(自身を含む): 466279200

約数和(自身を除く): 284948680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 647609, 1295218, 2590436, 3238045, 4533263, 5180872, 6476090, 9066526, 12952180, 18133052, 22666315, 25904360, 36266104, 45332630, 90665260, 181330520]

約数ペア:

[(1, 181330520), (2, 90665260), (4, 45332630), (5, 36266104), (7, 25904360), (8, 22666315), (10, 18133052), (14, 12952180), (20, 9066526), (28, 6476090), (35, 5180872), (40, 4533263), (56, 3238045), (70, 2590436), (140, 1295218), (280, 647609)]