640606218

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{142547}}^1$

素因数の和:142666

約数の個数: 32

約数和(自身を含む): 1477937664

約数和(自身を除く): 837331446

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 107, 214, 321, 642, 749, 1498, 2247, 4494, 142547, 285094, 427641, 855282, 997829, 1995658, 2993487, 5986974, 15252529, 30505058, 45757587, 91515174, 106767703, 213535406, 320303109, 640606218]

約数ペア:

[(1, 640606218), (2, 320303109), (3, 213535406), (6, 106767703), (7, 91515174), (14, 45757587), (21, 30505058), (42, 15252529), (107, 5986974), (214, 2993487), (321, 1995658), (642, 997829), (749, 855282), (1498, 427641), (2247, 285094), (4494, 142547)]