21840272

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{71843}}^1$

素因数の和:71870

約数の個数: 20

約数和(自身を含む): 44543280

約数和(自身を除く): 22703008

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 71843, 143686, 287372, 574744, 1149488, 1365017, 2730034, 5460068, 10920136, 21840272]

約数ペア:

[(1, 21840272), (2, 10920136), (4, 5460068), (8, 2730034), (16, 1365017), (19, 1149488), (38, 574744), (76, 287372), (152, 143686), (304, 71843)]