20555215

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{3803}}^1$

素因数の和:3878

約数の個数: 16

約数和(自身を含む): 26293248

約数和(自身を除く): 5738033

約数列:

[1, 5, 23, 47, 115, 235, 1081, 3803, 5405, 19015, 87469, 178741, 437345, 893705, 4111043, 20555215]

約数ペア:

[(1, 20555215), (5, 4111043), (23, 893705), (47, 437345), (115, 178741), (235, 87469), (1081, 19015), (3803, 5405)]