21243428

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{367}}^1\times {\mathrm{499}}^1$

素因数の和:899

約数の個数: 24

約数和(自身を含む): 38640000

約数和(自身を除く): 17396572

約数列:

[1, 2, 4, 29, 58, 116, 367, 499, 734, 998, 1468, 1996, 10643, 14471, 21286, 28942, 42572, 57884, 183133, 366266, 732532, 5310857, 10621714, 21243428]

約数ペア:

[(1, 21243428), (2, 10621714), (4, 5310857), (29, 732532), (58, 366266), (116, 183133), (367, 57884), (499, 42572), (734, 28942), (998, 21286), (1468, 14471), (1996, 10643)]