21492956260

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{4181509}}^1$

素因数の和:4181775

約数の個数: 24

約数和(自身を含む): 45310842360

約数和(自身を除く): 23817886100

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 4181509, 8363018, 16726036, 20907545, 41815090, 83630180, 1074647813, 2149295626, 4298591252, 5373239065, 10746478130, 21492956260]

約数ペア:

[(1, 21492956260), (2, 10746478130), (4, 5373239065), (5, 4298591252), (10, 2149295626), (20, 1074647813), (257, 83630180), (514, 41815090), (1028, 20907545), (1285, 16726036), (2570, 8363018), (5140, 4181509)]