21173144

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{139297}}^1$

素因数の和:139322

約数の個数: 16

約数和(自身を含む): 41789400

約数和(自身を除く): 20616256

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 139297, 278594, 557188, 1114376, 2646643, 5293286, 10586572, 21173144]

約数ペア:

[(1, 21173144), (2, 10586572), (4, 5293286), (8, 2646643), (19, 1114376), (38, 557188), (76, 278594), (152, 139297)]