640799282

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{237509}}^1$

素因数の和:237601

約数の個数: 16

約数和(自身を含む): 1026043200

約数和(自身を除く): 385243918

約数列:

[1, 2, 19, 38, 71, 142, 1349, 2698, 237509, 475018, 4512671, 9025342, 16863139, 33726278, 320399641, 640799282]

約数ペア:

[(1, 640799282), (2, 320399641), (19, 33726278), (38, 16863139), (71, 9025342), (142, 4512671), (1349, 475018), (2698, 237509)]