21685742

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{83}}^1\times {\mathrm{773}}^1$

素因数の和:884

約数の個数: 24

約数和(自身を含む): 35693784

約数和(自身を除く): 14008042

約数列:

[1, 2, 13, 26, 83, 166, 169, 338, 773, 1079, 1546, 2158, 10049, 14027, 20098, 28054, 64159, 128318, 130637, 261274, 834067, 1668134, 10842871, 21685742]

約数ペア:

[(1, 21685742), (2, 10842871), (13, 1668134), (26, 834067), (83, 261274), (166, 130637), (169, 128318), (338, 64159), (773, 28054), (1079, 20098), (1546, 14027), (2158, 10049)]