1287029212

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{647399}}^1$

素因数の和:647481

約数の個数: 24

約数和(自身を含む): 2610316800

約数和(自身を除く): 1323287588

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 994, 1988, 647399, 1294798, 2589596, 4531793, 9063586, 18127172, 45965329, 91930658, 183861316, 321757303, 643514606, 1287029212]

約数ペア:

[(1, 1287029212), (2, 643514606), (4, 321757303), (7, 183861316), (14, 91930658), (28, 45965329), (71, 18127172), (142, 9063586), (284, 4531793), (497, 2589596), (994, 1294798), (1988, 647399)]