20921112815

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{431}}^1\times {\mathrm{571069}}^1$

素因数の和:571522

約数の個数: 16

約数和(自身を含む): 26643841920

約数和(自身を除く): 5722729105

約数列:

[1, 5, 17, 85, 431, 2155, 7327, 36635, 571069, 2855345, 9708173, 48540865, 246130739, 1230653695, 4184222563, 20921112815]

約数ペア:

[(1, 20921112815), (5, 4184222563), (17, 1230653695), (85, 246130739), (431, 48540865), (2155, 9708173), (7327, 2855345), (36635, 571069)]