400490032

素因数分解:

$2^4\times {\mathrm{89}}^1\times {\mathrm{281243}}^1$

素因数の和:281340

約数の個数: 20

約数和(自身を含む): 784670760

約数和(自身を除く): 384180728

約数列:

[1, 2, 4, 8, 16, 89, 178, 356, 712, 1424, 281243, 562486, 1124972, 2249944, 4499888, 25030627, 50061254, 100122508, 200245016, 400490032]

約数ペア:

[(1, 400490032), (2, 200245016), (4, 100122508), (8, 50061254), (16, 25030627), (89, 4499888), (178, 2249944), (356, 1124972), (712, 562486), (1424, 281243)]