21485168

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{18913}}^1$

素因数の和:18992

約数の個数: 20

約数和(自身を含む): 42216048

約数和(自身を除く): 20730880

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 18913, 37826, 75652, 151304, 302608, 1342823, 2685646, 5371292, 10742584, 21485168]

約数ペア:

[(1, 21485168), (2, 10742584), (4, 5371292), (8, 2685646), (16, 1342823), (71, 302608), (142, 151304), (284, 75652), (568, 37826), (1136, 18913)]