198709505

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{643}}^1\times {\mathrm{3253}}^1$

素因数の和:3920

約数の個数: 16

約数和(自身を含む): 251469120

約数和(自身を除く): 52759615

約数列:

[1, 5, 19, 95, 643, 3215, 3253, 12217, 16265, 61085, 61807, 309035, 2091679, 10458395, 39741901, 198709505]

約数ペア:

[(1, 198709505), (5, 39741901), (19, 10458395), (95, 2091679), (643, 309035), (3215, 61807), (3253, 61085), (12217, 16265)]