1261892440

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{61979}}^1$

素因数の和:62499

約数の個数: 32

約数和(自身を含む): 2844882000

約数和(自身を除く): 1582989560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 1018, 2036, 2545, 4072, 5090, 10180, 20360, 61979, 123958, 247916, 309895, 495832, 619790, 1239580, 2479160, 31547311, 63094622, 126189244, 157736555, 252378488, 315473110, 630946220, 1261892440]

約数ペア:

[(1, 1261892440), (2, 630946220), (4, 315473110), (5, 252378488), (8, 157736555), (10, 126189244), (20, 63094622), (40, 31547311), (509, 2479160), (1018, 1239580), (2036, 619790), (2545, 495832), (4072, 309895), (5090, 247916), (10180, 123958), (20360, 61979)]