21863139

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{151}}^1\times {\mathrm{167}}^1$

素因数の和:355

約数の個数: 24

約数和(自身を含む): 31358208

約数和(自身を除く): 9495069

約数列:

[1, 3, 17, 51, 151, 167, 289, 453, 501, 867, 2567, 2839, 7701, 8517, 25217, 43639, 48263, 75651, 130917, 144789, 428689, 1286067, 7287713, 21863139]

約数ペア:

[(1, 21863139), (3, 7287713), (17, 1286067), (51, 428689), (151, 144789), (167, 130917), (289, 75651), (453, 48263), (501, 43639), (867, 25217), (2567, 8517), (2839, 7701)]