20409838

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{2699}}^1$

素因数の和:2919

約数の個数: 16

約数和(自身を含む): 32400000

約数和(自身を除く): 11990162

約数列:

[1, 2, 19, 38, 199, 398, 2699, 3781, 5398, 7562, 51281, 102562, 537101, 1074202, 10204919, 20409838]

約数ペア:

[(1, 20409838), (2, 10204919), (19, 1074202), (38, 537101), (199, 102562), (398, 51281), (2699, 7562), (3781, 5398)]