21021296

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69149}}^1$

素因数の和:69176

約数の個数: 20

約数和(自身を含む): 42873000

約数和(自身を除く): 21851704

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69149, 138298, 276596, 553192, 1106384, 1313831, 2627662, 5255324, 10510648, 21021296]

約数ペア:

[(1, 21021296), (2, 10510648), (4, 5255324), (8, 2627662), (16, 1313831), (19, 1106384), (38, 553192), (76, 276596), (152, 138298), (304, 69149)]