20438168

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{277}}^1\times {\mathrm{401}}^1$

素因数の和:707

約数の個数: 32

約数和(自身を含む): 40232160

約数和(自身を除く): 19793992

約数列:

[1, 2, 4, 8, 23, 46, 92, 184, 277, 401, 554, 802, 1108, 1604, 2216, 3208, 6371, 9223, 12742, 18446, 25484, 36892, 50968, 73784, 111077, 222154, 444308, 888616, 2554771, 5109542, 10219084, 20438168]

約数ペア:

[(1, 20438168), (2, 10219084), (4, 5109542), (8, 2554771), (23, 888616), (46, 444308), (92, 222154), (184, 111077), (277, 73784), (401, 50968), (554, 36892), (802, 25484), (1108, 18446), (1604, 12742), (2216, 9223), (3208, 6371)]