21665224

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{5449}}^1$

素因数の和:5533

約数の個数: 32

約数和(自身を含む): 47088000

約数和(自身を除く): 25422776

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 284, 497, 568, 994, 1988, 3976, 5449, 10898, 21796, 38143, 43592, 76286, 152572, 305144, 386879, 773758, 1547516, 2708153, 3095032, 5416306, 10832612, 21665224]

約数ペア:

[(1, 21665224), (2, 10832612), (4, 5416306), (7, 3095032), (8, 2708153), (14, 1547516), (28, 773758), (56, 386879), (71, 305144), (142, 152572), (284, 76286), (497, 43592), (568, 38143), (994, 21796), (1988, 10898), (3976, 5449)]