21084728

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{5303}}^1$

素因数の和:5387

約数の個数: 32

約数和(自身を含む): 45826560

約数和(自身を除く): 24741832

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 284, 497, 568, 994, 1988, 3976, 5303, 10606, 21212, 37121, 42424, 74242, 148484, 296968, 376513, 753026, 1506052, 2635591, 3012104, 5271182, 10542364, 21084728]

約数ペア:

[(1, 21084728), (2, 10542364), (4, 5271182), (7, 3012104), (8, 2635591), (14, 1506052), (28, 753026), (56, 376513), (71, 296968), (142, 148484), (284, 74242), (497, 42424), (568, 37121), (994, 21212), (1988, 10606), (3976, 5303)]