19801460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{141439}}^1$

素因数の和:141455

約数の個数: 24

約数和(自身を含む): 47523840

約数和(自身を除く): 27722380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 141439, 282878, 565756, 707195, 990073, 1414390, 1980146, 2828780, 3960292, 4950365, 9900730, 19801460]

約数ペア:

[(1, 19801460), (2, 9900730), (4, 4950365), (5, 3960292), (7, 2828780), (10, 1980146), (14, 1414390), (20, 990073), (28, 707195), (35, 565756), (70, 282878), (140, 141439)]