21251885

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{283}}^1\times {\mathrm{653}}^1$

素因数の和:964

約数の個数: 16

約数和(自身を含む): 26745984

約数和(自身を除く): 5494099

約数列:

[1, 5, 23, 115, 283, 653, 1415, 3265, 6509, 15019, 32545, 75095, 184799, 923995, 4250377, 21251885]

約数ペア:

[(1, 21251885), (5, 4250377), (23, 923995), (115, 184799), (283, 75095), (653, 32545), (1415, 15019), (3265, 6509)]