20851489915

素因数分解:

$5^1\times {\mathrm{251}}^1\times {\mathrm{1021}}^1\times {\mathrm{16273}}^1$

素因数の和:17550

約数の個数: 16

約数和(自身を含む): 25147626336

約数和(自身を除く): 4296136421

約数列:

[1, 5, 251, 1021, 1255, 5105, 16273, 81365, 256271, 1281355, 4084523, 16614733, 20422615, 83073665, 4170297983, 20851489915]

約数ペア:

[(1, 20851489915), (5, 4170297983), (251, 83073665), (1021, 20422615), (1255, 16614733), (5105, 4084523), (16273, 1281355), (81365, 256271)]