656892

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:338

約数の個数: 36

約数和(自身を含む): 1690416

約数和(自身を除く): 1033524

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 257, 284, 426, 514, 639, 771, 852, 1028, 1278, 1542, 2313, 2556, 3084, 4626, 9252, 18247, 36494, 54741, 72988, 109482, 164223, 218964, 328446, 656892]

約数ペア:

[(1, 656892), (2, 328446), (3, 218964), (4, 164223), (6, 109482), (9, 72988), (12, 54741), (18, 36494), (36, 18247), (71, 9252), (142, 4626), (213, 3084), (257, 2556), (284, 2313), (426, 1542), (514, 1278), (639, 1028), (771, 852)]