21719285

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1\times {\mathrm{211}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 31871232

約数和(自身を除く): 10151947

約数列:

[1, 5, 7, 17, 35, 85, 119, 173, 211, 595, 865, 1055, 1211, 1477, 2941, 3587, 6055, 7385, 14705, 17935, 20587, 25109, 36503, 102935, 125545, 182515, 255521, 620551, 1277605, 3102755, 4343857, 21719285]

約数ペア:

[(1, 21719285), (5, 4343857), (7, 3102755), (17, 1277605), (35, 620551), (85, 255521), (119, 182515), (173, 125545), (211, 102935), (595, 36503), (865, 25109), (1055, 20587), (1211, 17935), (1477, 14705), (2941, 7385), (3587, 6055)]