20985858

素因数分解:

$2^1\times 3^3\times {\mathrm{569}}^1\times {\mathrm{683}}^1$

素因数の和:1263

約数の個数: 32

約数和(自身を含む): 46785600

約数和(自身を除く): 25799742

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 569, 683, 1138, 1366, 1707, 2049, 3414, 4098, 5121, 6147, 10242, 12294, 15363, 18441, 30726, 36882, 388627, 777254, 1165881, 2331762, 3497643, 6995286, 10492929, 20985858]

約数ペア:

[(1, 20985858), (2, 10492929), (3, 6995286), (6, 3497643), (9, 2331762), (18, 1165881), (27, 777254), (54, 388627), (569, 36882), (683, 30726), (1138, 18441), (1366, 15363), (1707, 12294), (2049, 10242), (3414, 6147), (4098, 5121)]